nm-settings man page

nm-settings — Description of settings and properties of NetworkManager connection profiles

Description

NetworkManager is based on a concept of connection profiles, sometimes referred to as connections only. These connection profiles contain a network configuration. When NetworkManager activates a connection profile on a network device the configuration will be applied and an active network connection will be established. Users are free to create as many connection profiles as they see fit. Thus they are flexible in having various network configurations for different networking needs. The connection profiles are handled by NetworkManager via settings service and are exported on D-Bus (/org/freedesktop/NetworkManager/Settings/<num> objects). The conceptual objects can be described as follows:

Connection (profile)

A specific, encapsulated, independent group of settings describing all the configuration required to connect to a specific network. It is referred to by a unique identifier called the UUID. A connection is tied to a one specific device type, but not necessarily a specific hardware device. It is composed of one or more Settings objects.

Setting

A group of related key/value pairs describing a specific piece of a Connection (profile). Settings keys and allowed values are described in the tables below. Keys are also referred to as properties. Developers can find the setting objects and their properties in the libnm-util sources. Look for the class_init functions near the bottom of each setting source file.

The settings and properties shown in tables below list all available connection configuration options. However, note that not all settings are applicable to all connection types. NetworkManager provides a command-line tool nmcli that allows direct configuration of the settings and properties according to a connection profile type. nmcli connection editor has also a built-in describe command that can display description of particular settings and properties of this page.

Table 1. 802-1x setting

Key NameValue TypeDefault ValueValue Description
altsubject-matchesarray of string[]List of strings to be matched against the altSubjectName of the certificate presented by the authentication server. If the list is empty, no verification of the server certificate's altSubjectName is performed.
anonymous-identitystring Anonymous identity string for EAP authentication methods. Used as the unencrypted identity with EAP types that support different tunneled identity like EAP-TTLS.
ca-certbyte array Contains the CA certificate if used by the EAP method specified in the "eap" property. Certificate data is specified using a "scheme"; two are currently supported: blob and path. When using the blob scheme (which is backwards compatible with NM 0.7.x) this property should be set to the certificate's DER encoded data. When using the path scheme, this property should be set to the full UTF-8 encoded path of the certificate, prefixed with the string "file://" and ending with a terminating NUL byte. This property can be unset even if the EAP method supports CA certificates, but this allows man-in-the-middle attacks and is NOT recommended.
ca-pathstring UTF-8 encoded path to a directory containing PEM or DER formatted certificates to be added to the verification chain in addition to the certificate specified in the "ca-cert" property.
client-certbyte array Contains the client certificate if used by the EAP method specified in the "eap" property. Certificate data is specified using a "scheme"; two are currently supported: blob and path. When using the blob scheme (which is backwards compatible with NM 0.7.x) this property should be set to the certificate's DER encoded data. When using the path scheme, this property should be set to the full UTF-8 encoded path of the certificate, prefixed with the string "file://" and ending with a terminating NUL byte.
domain-suffix-matchstring Constraint for server domain name. If set, this FQDN is used as a suffix match requirement for dNSName element(s) of the certificate presented by the authentication server. If a matching dNSName is found, this constraint is met. If no dNSName values are present, this constraint is matched against SubjectName CN using same suffix match comparison.
eaparray of string[]The allowed EAP method to be used when authenticating to the network with 802.1x. Valid methods are: "leap", "md5", "tls", "peap", "ttls", "pwd", and "fast". Each method requires different configuration using the properties of this setting; refer to wpa_supplicant documentation for the allowed combinations.
identitystring Identity string for EAP authentication methods. Often the user's user or login name.
namestring802-1xThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
pac-filestring UTF-8 encoded file path containing PAC for EAP-FAST.
passwordstring UTF-8 encoded password used for EAP authentication methods. If both the "password" property and the "password-raw" property are specified, "password" is preferred.
password-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "password" property. (see the section called “Secret flag types:” for flag values)
password-rawbyte array Password used for EAP authentication methods, given as a byte array to allow passwords in other encodings than UTF-8 to be used. If both the "password" property and the "password-raw" property are specified, "password" is preferred.
password-raw-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "password-raw" property. (see the section called “Secret flag types:” for flag values)
phase1-fast-provisioningstring Enables or disables in-line provisioning of EAP-FAST credentials when FAST is specified as the EAP method in the "eap" property. Recognized values are "0" (disabled), "1" (allow unauthenticated provisioning), "2" (allow authenticated provisioning), and "3" (allow both authenticated and unauthenticated provisioning). See the wpa_supplicant documentation for more details.
phase1-peaplabelstring Forces use of the new PEAP label during key derivation. Some RADIUS servers may require forcing the new PEAP label to interoperate with PEAPv1. Set to "1" to force use of the new PEAP label. See the wpa_supplicant documentation for more details.
phase1-peapverstring Forces which PEAP version is used when PEAP is set as the EAP method in the "eap" property. When unset, the version reported by the server will be used. Sometimes when using older RADIUS servers, it is necessary to force the client to use a particular PEAP version. To do so, this property may be set to "0" or "1" to force that specific PEAP version.
phase2-altsubject-matchesarray of string[]List of strings to be matched against the altSubjectName of the certificate presented by the authentication server during the inner "phase 2" authentication. If the list is empty, no verification of the server certificate's altSubjectName is performed.
phase2-authstring Specifies the allowed "phase 2" inner non-EAP authentication methods when an EAP method that uses an inner TLS tunnel is specified in the "eap" property. Recognized non-EAP "phase 2" methods are "pap", "chap", "mschap", "mschapv2", "gtc", "otp", "md5", and "tls". Each "phase 2" inner method requires specific parameters for successful authentication; see the wpa_supplicant documentation for more details.
phase2-autheapstring Specifies the allowed "phase 2" inner EAP-based authentication methods when an EAP method that uses an inner TLS tunnel is specified in the "eap" property. Recognized EAP-based "phase 2" methods are "md5", "mschapv2", "otp", "gtc", and "tls". Each "phase 2" inner method requires specific parameters for successful authentication; see the wpa_supplicant documentation for more details.
phase2-ca-certbyte array Contains the "phase 2" CA certificate if used by the EAP method specified in the "phase2-auth" or "phase2-autheap" properties. Certificate data is specified using a "scheme"; two are currently supported: blob and path. When using the blob scheme (which is backwards compatible with NM 0.7.x) this property should be set to the certificate's DER encoded data. When using the path scheme, this property should be set to the full UTF-8 encoded path of the certificate, prefixed with the string "file://" and ending with a terminating NUL byte. This property can be unset even if the EAP method supports CA certificates, but this allows man-in-the-middle attacks and is NOT recommended.
phase2-ca-pathstring UTF-8 encoded path to a directory containing PEM or DER formatted certificates to be added to the verification chain in addition to the certificate specified in the "phase2-ca-cert" property.
phase2-client-certbyte array Contains the "phase 2" client certificate if used by the EAP method specified in the "phase2-auth" or "phase2-autheap" properties. Certificate data is specified using a "scheme"; two are currently supported: blob and path. When using the blob scheme (which is backwards compatible with NM 0.7.x) this property should be set to the certificate's DER encoded data. When using the path scheme, this property should be set to the full UTF-8 encoded path of the certificate, prefixed with the string "file://" and ending with a terminating NUL byte. This property can be unset even if the EAP method supports CA certificates, but this allows man-in-the-middle attacks and is NOT recommended.
phase2-domain-suffix-matchstring Constraint for server domain name. If set, this FQDN is used as a suffix match requirement for dNSName element(s) of the certificate presented by the authentication server during the inner "phase 2" authentication. If a matching dNSName is found, this constraint is met. If no dNSName values are present, this constraint is matched against SubjectName CN using same suffix match comparison.
phase2-private-keybyte array Contains the "phase 2" inner private key when the "phase2-auth" or "phase2-autheap" property is set to "tls". Key data is specified using a "scheme"; two are currently supported: blob and path. When using the blob scheme and private keys, this property should be set to the key's encrypted PEM encoded data. When using private keys with the path scheme, this property should be set to the full UTF-8 encoded path of the key, prefixed with the string "file://" and ending with a terminating NUL byte. When using PKCS#12 format private keys and the blob scheme, this property should be set to the PKCS#12 data and the "phase2-private-key-password" property must be set to password used to decrypt the PKCS#12 certificate and key. When using PKCS#12 files and the path scheme, this property should be set to the full UTF-8 encoded path of the key, prefixed with the string "file://" and and ending with a terminating NUL byte, and as with the blob scheme the "phase2-private-key-password" property must be set to the password used to decode the PKCS#12 private key and certificate.
phase2-private-key-passwordstring The password used to decrypt the "phase 2" private key specified in the "phase2-private-key" property when the private key either uses the path scheme, or is a PKCS#12 format key.
phase2-private-key-password-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "phase2-private-key-password" property. (see the section called “Secret flag types:” for flag values)
phase2-subject-matchstring Substring to be matched against the subject of the certificate presented by the authentication server during the inner "phase 2" authentication. When unset, no verification of the authentication server certificate's subject is performed. This property provides little security, if any, and its use is deprecated in favor of NMSetting8021x:phase2-domain-suffix-match.
pinstring PIN used for EAP authentication methods.
pin-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "pin" property. (see the section called “Secret flag types:” for flag values)
private-keybyte array Contains the private key when the "eap" property is set to "tls". Key data is specified using a "scheme"; two are currently supported: blob and path. When using the blob scheme and private keys, this property should be set to the key's encrypted PEM encoded data. When using private keys with the path scheme, this property should be set to the full UTF-8 encoded path of the key, prefixed with the string "file://" and ending with a terminating NUL byte. When using PKCS#12 format private keys and the blob scheme, this property should be set to the PKCS#12 data and the "private-key-password" property must be set to password used to decrypt the PKCS#12 certificate and key. When using PKCS#12 files and the path scheme, this property should be set to the full UTF-8 encoded path of the key, prefixed with the string "file://" and and ending with a terminating NUL byte, and as with the blob scheme the "private-key-password" property must be set to the password used to decode the PKCS#12 private key and certificate. WARNING: "private-key" is not a "secret" property, and thus unencrypted private key data using the BLOB scheme may be readable by unprivileged users. Private keys should always be encrypted with a private key password to prevent unauthorized access to unencrypted private key data.
private-key-passwordstring The password used to decrypt the private key specified in the "private-key" property when the private key either uses the path scheme, or if the private key is a PKCS#12 format key.
private-key-password-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "private-key-password" property. (see the section called “Secret flag types:” for flag values)
subject-matchstring Substring to be matched against the subject of the certificate presented by the authentication server. When unset, no verification of the authentication server certificate's subject is performed. This property provides little security, if any, and its use is deprecated in favor of NMSetting8021x:domain-suffix-match.
system-ca-certsbooleanFALSEWhen TRUE, overrides the "ca-path" and "phase2-ca-path" properties using the system CA directory specified at configure time with the --system-ca-path switch. The certificates in this directory are added to the verification chain in addition to any certificates specified by the "ca-cert" and "phase2-ca-cert" properties. If the path provided with --system-ca-path is rather a file name (bundle of trusted CA certificates), it overrides "ca-cert" and "phase2-ca-cert" properties instead (sets ca_cert/ca_cert2 options for wpa_supplicant).

Table 2. adsl setting

Key NameValue TypeDefault ValueValue Description
encapsulationstring Encapsulation of ADSL connection. Can be "vcmux" or "llc".
namestringadslThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
passwordstring Password used to authenticate with the ADSL service.
password-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "password" property. (see the section called “Secret flag types:” for flag values)
protocolstring ADSL connection protocol. Can be "pppoa", "pppoe" or "ipoatm".
usernamestring Username used to authenticate with the ADSL service.
vciuint320VCI of ADSL connection
vpiuint320VPI of ADSL connection

Table 3. bluetooth setting

Key NameValue TypeDefault ValueValue Description
bdaddrbyte array The Bluetooth address of the device.
namestringbluetoothThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
typestring Either "dun" for Dial-Up Networking connections or "panu" for Personal Area Networking connections to devices supporting the NAP profile.

Table 4. bond setting

Key NameValue TypeDefault ValueValue Description
interface-namestring Deprecated in favor of connection.interface-name, but can be used for backward-compatibility with older daemons, to set the bond's interface name.
namestringbondThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
optionsdict of string to string{'mode': 'balance-rr'}Dictionary of key/value pairs of bonding options. Both keys and values must be strings. Option names must contain only alphanumeric characters (ie, [a-zA-Z0-9]).

Table 5. bridge setting

Key NameValue TypeDefault ValueValue Description
ageing-timeuint32300The Ethernet MAC address aging time, in seconds.
forward-delayuint3215The Spanning Tree Protocol (STP) forwarding delay, in seconds.
hello-timeuint322The Spanning Tree Protocol (STP) hello time, in seconds.
interface-namestring Deprecated in favor of connection.interface-name, but can be used for backward-compatibility with older daemons, to set the bridge's interface name.
mac-addressbyte array If specified, the MAC address of bridge. When creating a new bridge, this MAC address will be set. When matching an existing (outside NetworkManager created) bridge, this MAC address must match.
max-ageuint3220The Spanning Tree Protocol (STP) maximum message age, in seconds.
multicast-snoopingbooleanTRUEControls whether IGMP snooping is enabled for this bridge. Note that if snooping was automatically disabled due to hash collisions, the system may refuse to enable the feature until the collisions are resolved.
namestringbridgeThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
priorityuint3232768Sets the Spanning Tree Protocol (STP) priority for this bridge. Lower values are "better"; the lowest priority bridge will be elected the root bridge.
stpbooleanTRUEControls whether Spanning Tree Protocol (STP) is enabled for this bridge.

Table 6. bridge-port setting

Key NameValue TypeDefault ValueValue Description
hairpin-modebooleanFALSEEnables or disabled "hairpin mode" for the port, which allows frames to be sent back out through the port the frame was received on.
namestringbridge-portThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
path-costuint32100The Spanning Tree Protocol (STP) port cost for destinations via this port.
priorityuint3232The Spanning Tree Protocol (STP) priority of this bridge port.

Table 7. cdma setting

Key NameValue TypeDefault ValueValue Description
namestringcdmaThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
numberstring The number to dial to establish the connection to the CDMA-based mobile broadband network, if any. If not specified, the default number (#777) is used when required.
passwordstring The password used to authenticate with the network, if required. Many providers do not require a password, or accept any password. But if a password is required, it is specified here.
password-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "password" property. (see the section called “Secret flag types:” for flag values)
usernamestring The username used to authenticate with the network, if required. Many providers do not require a username, or accept any username. But if a username is required, it is specified here.

Table 8. connection setting

Key NameValue TypeDefault ValueValue Description
autoconnectbooleanTRUEWhether or not the connection should be automatically connected by NetworkManager when the resources for the connection are available. TRUE to automatically activate the connection, FALSE to require manual intervention to activate the connection.
autoconnect-priorityint320The autoconnect priority. If the connection is set to autoconnect, connections with higher priority will be preferred. Defaults to 0. The higher number means higher priority.
autoconnect-retriesint32-1The number of times a connection should be tried when autoctivating before giving up. Zero means forever, -1 means the global default (4 times if not overridden).
autoconnect-slavesNMSettingConnectionAutoconnectSlaves (int32) Whether or not slaves of this connection should be automatically brought up when NetworkManager activates this connection. This only has a real effect for master connections. The permitted values are: 0: leave slave connections untouched, 1: activate all the slave connections with this connection, -1: default. If -1 (default) is set, global connection.autoconnect-slaves is read to determine the real value. If it is default as well, this fallbacks to 0.
gateway-ping-timeoutuint320If greater than zero, delay success of IP addressing until either the timeout is reached, or an IP gateway replies to a ping.
idstring A human readable unique identifier for the connection, like "Work Wi-Fi" or "T-Mobile 3G".
interface-namestring The name of the network interface this connection is bound to. If not set, then the connection can be attached to any interface of the appropriate type (subject to restrictions imposed by other settings). For software devices this specifies the name of the created device. For connection types where interface names cannot easily be made persistent (e.g. mobile broadband or USB Ethernet), this property should not be used. Setting this property restricts the interfaces a connection can be used with, and if interface names change or are reordered the connection may be applied to the wrong interface.
lldpint32-1Whether LLDP is enabled for the connection.
masterstring Interface name of the master device or UUID of the master connection.
meteredNMMetered (int32) Whether the connection is metered. When updating this property on a currently activated connection, the change takes effect immediately.
namestringconnectionThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
permissionsarray of string[]An array of strings defining what access a given user has to this connection. If this is NULL or empty, all users are allowed to access this connection. Otherwise a user is allowed to access this connection if and only if they are in this list. Each entry is of the form "[type]:[id]:[reserved]"; for example, "user:dcbw:blah". At this time only the "user" [type] is allowed. Any other values are ignored and reserved for future use. [id] is the username that this permission refers to, which may not contain the ":" character. Any [reserved] information present must be ignored and is reserved for future use. All of [type], [id], and [reserved] must be valid UTF-8.
read-onlybooleanFALSEFALSE if the connection can be modified using the provided settings service's D-Bus interface with the right privileges, or TRUE if the connection is read-only and cannot be modified.
secondariesarray of string[]List of connection UUIDs that should be activated when the base connection itself is activated. Currently only VPN connections are supported.
slave-typestring Setting name of the device type of this slave's master connection (eg, "bond"), or NULL if this connection is not a slave.
stable-idstring This token to generate stable IDs for the connection. If unset, the UUID will be used instead. The stable-id is used instead of the connection UUID for generating IPv6 stable private addresses with ipv6.addr-gen-mode=stable-privacy. It is also used to seed the generated cloned MAC address for ethernet.cloned-mac-address=stable and wifi.cloned-mac-address=stable.
timestampuint640The time, in seconds since the Unix Epoch, that the connection was last _successfully_ fully activated. NetworkManager updates the connection timestamp periodically when the connection is active to ensure that an active connection has the latest timestamp. The property is only meant for reading (changes to this property will not be preserved).
typestring Base type of the connection. For hardware-dependent connections, should contain the setting name of the hardware-type specific setting (ie, "802-3-ethernet" or "802-11-wireless" or "bluetooth", etc), and for non-hardware dependent connections like VPN or otherwise, should contain the setting name of that setting type (ie, "vpn" or "bridge", etc).
uuidstring A universally unique identifier for the connection, for example generated with libuuid. It should be assigned when the connection is created, and never changed as long as the connection still applies to the same network. For example, it should not be changed when the "id" property or NMSettingIP4Config changes, but might need to be re-created when the Wi-Fi SSID, mobile broadband network provider, or "type" property changes. The UUID must be in the format "2815492f-7e56-435e-b2e9-246bd7cdc664" (ie, contains only hexadecimal characters and "-").
zonestring The trust level of a the connection. Free form case-insensitive string (for example "Home", "Work", "Public"). NULL or unspecified zone means the connection will be placed in the default zone as defined by the firewall. When updating this property on a currently activated connection, the change takes effect immediately.

Table 9. dcb setting

Key NameValue TypeDefault ValueValue Description
app-fcoe-flagsNMSettingDcbFlags (uint32) Specifies the NMSettingDcbFlags for the DCB FCoE application. Flags may be any combination of NM_SETTING_DCB_FLAG_ENABLE (0x1), NM_SETTING_DCB_FLAG_ADVERTISE (0x2), and NM_SETTING_DCB_FLAG_WILLING (0x4).
app-fcoe-modestring"fabric"The FCoE controller mode; either "fabric" (default) or "vn2vn".
app-fcoe-priorityint32-1The highest User Priority (0 - 7) which FCoE frames should use, or -1 for default priority. Only used when the "app-fcoe-flags" property includes the NM_SETTING_DCB_FLAG_ENABLE (0x1) flag.
app-fip-flagsNMSettingDcbFlags (uint32) Specifies the NMSettingDcbFlags for the DCB FIP application. Flags may be any combination of NM_SETTING_DCB_FLAG_ENABLE (0x1), NM_SETTING_DCB_FLAG_ADVERTISE (0x2), and NM_SETTING_DCB_FLAG_WILLING (0x4).
app-fip-priorityint32-1The highest User Priority (0 - 7) which FIP frames should use, or -1 for default priority. Only used when the "app-fip-flags" property includes the NM_SETTING_DCB_FLAG_ENABLE (0x1) flag.
app-iscsi-flagsNMSettingDcbFlags (uint32) Specifies the NMSettingDcbFlags for the DCB iSCSI application. Flags may be any combination of NM_SETTING_DCB_FLAG_ENABLE (0x1), NM_SETTING_DCB_FLAG_ADVERTISE (0x2), and NM_SETTING_DCB_FLAG_WILLING (0x4).
app-iscsi-priorityint32-1The highest User Priority (0 - 7) which iSCSI frames should use, or -1 for default priority. Only used when the "app-iscsi-flags" property includes the NM_SETTING_DCB_FLAG_ENABLE (0x1) flag.
namestringdcbThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
priority-bandwidtharray of uint32[0, 0, 0, 0, 0, 0, 0, 0]An array of 8 uint values, where the array index corresponds to the User Priority (0 - 7) and the value indicates the percentage of bandwidth of the priority's assigned group that the priority may use. The sum of all percentages for priorities which belong to the same group must total 100 percent.
priority-flow-controlarray of uint32[0, 0, 0, 0, 0, 0, 0, 0]An array of 8 boolean values, where the array index corresponds to the User Priority (0 - 7) and the value indicates whether or not the corresponding priority should transmit priority pause.
priority-flow-control-flagsNMSettingDcbFlags (uint32) Specifies the NMSettingDcbFlags for DCB Priority Flow Control (PFC). Flags may be any combination of NM_SETTING_DCB_FLAG_ENABLE (0x1), NM_SETTING_DCB_FLAG_ADVERTISE (0x2), and NM_SETTING_DCB_FLAG_WILLING (0x4).
priority-group-bandwidtharray of uint32[0, 0, 0, 0, 0, 0, 0, 0]An array of 8 uint values, where the array index corresponds to the Priority Group ID (0 - 7) and the value indicates the percentage of link bandwidth allocated to that group. Allowed values are 0 - 100, and the sum of all values must total 100 percent.
priority-group-flagsNMSettingDcbFlags (uint32) Specifies the NMSettingDcbFlags for DCB Priority Groups. Flags may be any combination of NM_SETTING_DCB_FLAG_ENABLE (0x1), NM_SETTING_DCB_FLAG_ADVERTISE (0x2), and NM_SETTING_DCB_FLAG_WILLING (0x4).
priority-group-idarray of uint32[0, 0, 0, 0, 0, 0, 0, 0]An array of 8 uint values, where the array index corresponds to the User Priority (0 - 7) and the value indicates the Priority Group ID. Allowed Priority Group ID values are 0 - 7 or 15 for the unrestricted group.
priority-strict-bandwidtharray of uint32[0, 0, 0, 0, 0, 0, 0, 0]An array of 8 boolean values, where the array index corresponds to the User Priority (0 - 7) and the value indicates whether or not the priority may use all of the bandwidth allocated to its assigned group.
priority-traffic-classarray of uint32[0, 0, 0, 0, 0, 0, 0, 0]An array of 8 uint values, where the array index corresponds to the User Priority (0 - 7) and the value indicates the traffic class (0 - 7) to which the priority is mapped.

Table 10. generic setting

Key NameValue TypeDefault ValueValue Description
namestringgenericThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".

Table 11. gsm setting

Key NameValue TypeDefault ValueValue Description
apnstring The GPRS Access Point Name specifying the APN used when establishing a data session with the GSM-based network. The APN often determines how the user will be billed for their network usage and whether the user has access to the Internet or just a provider-specific walled-garden, so it is important to use the correct APN for the user's mobile broadband plan. The APN may only be composed of the characters a-z, 0-9, ., and - per GSM 03.60 Section 14.9.
device-idstring The device unique identifier (as given by the WWAN management service) which this connection applies to. If given, the connection will only apply to the specified device.
home-onlybooleanFALSEWhen TRUE, only connections to the home network will be allowed. Connections to roaming networks will not be made.
namestringgsmThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
network-idstring The Network ID (GSM LAI format, ie MCC-MNC) to force specific network registration. If the Network ID is specified, NetworkManager will attempt to force the device to register only on the specified network. This can be used to ensure that the device does not roam when direct roaming control of the device is not otherwise possible.
numberstring Number to dial when establishing a PPP data session with the GSM-based mobile broadband network. Many modems do not require PPP for connections to the mobile network and thus this property should be left blank, which allows NetworkManager to select the appropriate settings automatically.
passwordstring The password used to authenticate with the network, if required. Many providers do not require a password, or accept any password. But if a password is required, it is specified here.
password-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "password" property. (see the section called “Secret flag types:” for flag values)
pinstring If the SIM is locked with a PIN it must be unlocked before any other operations are requested. Specify the PIN here to allow operation of the device.
pin-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "pin" property. (see the section called “Secret flag types:” for flag values)
sim-idstring The SIM card unique identifier (as given by the WWAN management service) which this connection applies to. If given, the connection will apply to any device also allowed by "device-id" which contains a SIM card matching the given identifier.
sim-operator-idstring A MCC/MNC string like "310260" or "21601" identifying the specific mobile network operator which this connection applies to. If given, the connection will apply to any device also allowed by "device-id" and "sim-id" which contains a SIM card provisioined by the given operator.
usernamestring The username used to authenticate with the network, if required. Many providers do not require a username, or accept any username. But if a username is required, it is specified here.

Table 12. infiniband setting

Key NameValue TypeDefault ValueValue Description
mac-addressbyte array If specified, this connection will only apply to the IPoIB device whose permanent MAC address matches. This property does not change the MAC address of the device (i.e. MAC spoofing).
mtuuint320If non-zero, only transmit packets of the specified size or smaller, breaking larger packets up into multiple frames.
namestringinfinibandThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
p-keyint32-1The InfiniBand P_Key to use for this device. A value of -1 means to use the default P_Key (aka "the P_Key at index 0"). Otherwise it is a 16-bit unsigned integer, whose high bit is set if it is a "full membership" P_Key.
parentstring The interface name of the parent device of this device. Normally NULL, but if the "p_key" property is set, then you must specify the base device by setting either this property or "mac-address".
transport-modestring The IP-over-InfiniBand transport mode. Either "datagram" or "connected".

Table 13. ipv4 setting

Key NameValue TypeDefault ValueValue Description
address-dataarray of vardict Array of IPv4 addresses. Each address dictionary contains at least 'address' and 'prefix' entries, containing the IP address as a string, and the prefix length as a uint32. Additional attributes may also exist on some addresses.
addressesarray of array of uint32[]Deprecated in favor of the 'address-data' and 'gateway' properties, but this can be used for backward-compatibility with older daemons. Note that if you send this property the daemon will ignore 'address-data' and 'gateway'. Array of IPv4 address structures. Each IPv4 address structure is composed of 3 32-bit values; the first being the IPv4 address (network byte order), the second the prefix (1 - 32), and last the IPv4 gateway (network byte order). The gateway may be left as 0 if no gateway exists for that subnet.
dad-timeoutint32-1Timeout in milliseconds used to check for the presence of duplicate IP addresses on the network. If an address conflict is detected, the activation will fail. A zero value means that no duplicate address detection is performed, -1 means the default value (either configuration ipvx.dad-timeout override or 3 seconds). A value greater than zero is a timeout in milliseconds.
dhcp-client-idstring A string sent to the DHCP server to identify the local machine which the DHCP server may use to customize the DHCP lease and options.
dhcp-fqdnstring If the "dhcp-send-hostname" property is TRUE, then the specified FQDN will be sent to the DHCP server when acquiring a lease. This property and "dhcp-hostname" are mutually exclusive and cannot be set at the same time.
dhcp-hostnamestring If the "dhcp-send-hostname" property is TRUE, then the specified name will be sent to the DHCP server when acquiring a lease. This property and "dhcp-fqdn" are mutually exclusive and cannot be set at the same time.
dhcp-send-hostnamebooleanTRUEIf TRUE, a hostname is sent to the DHCP server when acquiring a lease. Some DHCP servers use this hostname to update DNS databases, essentially providing a static hostname for the computer. If the "dhcp-hostname" property is NULL and this property is TRUE, the current persistent hostname of the computer is sent.
dhcp-timeoutint320A timeout for a DHCP transaction in seconds.
dnsarray of uint32[]Array of IP addresses of DNS servers (as network-byte-order integers)
dns-optionsarray of string[]Array of DNS options. NULL means that the options are unset and left at the default. In this case NetworkManager will use default options. This is distinct from an empty list of properties.
dns-priorityint320DNS priority. The relative priority to be used when determining the order of DNS servers in resolv.conf. A lower value means that servers will be on top of the file. Zero selects the default value, which is 50 for VPNs and 100 for other connections. When multiple devices have configurations with the same priority, the one with an active default route will be preferred. Note that when using dns=dnsmasq the order is meaningless since dnsmasq forwards queries to all known servers at the same time. Negative values have the special effect of excluding other configurations with a greater priority value; so in presence of at least a negative priority, only DNS servers from configurations with the lowest priority value will be used.
dns-searcharray of string[]Array of DNS search domains.
gatewaystring The gateway associated with this configuration. This is only meaningful if "addresses" is also set.
ignore-auto-dnsbooleanFALSEWhen "method" is set to "auto" and this property to TRUE, automatically configured nameservers and search domains are ignored and only nameservers and search domains specified in the "dns" and "dns-search" properties, if any, are used.
ignore-auto-routesbooleanFALSEWhen "method" is set to "auto" and this property to TRUE, automatically configured routes are ignored and only routes specified in the "routes" property, if any, are used.
may-failbooleanTRUEIf TRUE, allow overall network configuration to proceed even if the configuration specified by this property times out. Note that at least one IP configuration must succeed or overall network configuration will still fail. For example, in IPv6-only networks, setting this property to TRUE on the NMSettingIP4Config allows the overall network configuration to succeed if IPv4 configuration fails but IPv6 configuration completes successfully.
methodstring IP configuration method. NMSettingIP4Config and NMSettingIP6Config both support "auto", "manual", and "link-local". See the subclass-specific documentation for other values. In general, for the "auto" method, properties such as "dns" and "routes" specify information that is added on to the information returned from automatic configuration. The "ignore-auto-routes" and "ignore-auto-dns" properties modify this behavior. For methods that imply no upstream network, such as "shared" or "link-local", these properties must be empty. For IPv4 method "shared", the IP subnet can be configured by adding one manual IPv4 address or otherwise 10.42.x.0/24 is chosen.
namestringipv4The setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
never-defaultbooleanFALSEIf TRUE, this connection will never be the default connection for this IP type, meaning it will never be assigned the default route by NetworkManager.
route-dataarray of vardict Array of IPv4 routes. Each route dictionary contains at least 'dest' and 'prefix' entries, containing the destination IP address as a string, and the prefix length as a uint32. Most routes will also have a 'gateway' entry, containing the gateway IP address as a string. If the route has a 'metric' entry (containing a uint32), that will be used as the metric for the route (otherwise NM will pick a default value appropriate to the device). Additional attributes may also exist on some routes.
route-metricint64-1The default metric for routes that don't explicitly specify a metric. The default value -1 means that the metric is choosen automatically based on the device type. The metric applies to dynamic routes, manual (static) routes that don't have an explicit metric setting, address prefix routes, and the default route. Note that for IPv6, the kernel accepts zero (0) but coerces it to 1024 (user default). Hence, setting this property to zero effectively mean setting it to 1024. For IPv4, zero is a regular value for the metric.
routesarray of array of uint32[]Deprecated in favor of the 'route-data' property, but this can be used for backward-compatibility with older daemons. Note that if you send this property the daemon will ignore 'route-data'. Array of IPv4 route structures. Each IPv4 route structure is composed of 4 32-bit values; the first being the destination IPv4 network or address (network byte order), the second the destination network or address prefix (1 - 32), the third being the next-hop (network byte order) if any, and the fourth being the route metric. If the metric is 0, NM will choose an appropriate default metric for the device. (There is no way to explicitly specify an actual metric of 0 with this property.)

Table 14. ipv6 setting

Key NameValue TypeDefault ValueValue Description
addr-gen-modeint321Configure method for creating the address for use with RFC4862 IPv6 Stateless Address Autoconfiguration. The permitted values are: "eui64", or "stable-privacy". If the property is set to "eui64", the addresses will be generated using the interface tokens derived from hardware address. This makes the host part of the address to stay constant, making it possible to track host's presence when it changes networks. The address changes when the interface hardware is replaced. The value of "stable-privacy" enables use of cryptographically secure hash of a secret host-specific key along with the connection identification and the network address as specified by RFC7217. This makes it impossible to use the address track host's presence, and makes the address stable when the network interface hardware is replaced. On D-Bus, the absence of an addr-gen-mode setting equals enabling "stable-privacy". For keyfile plugin, the absence of the setting on disk means "eui64" so that the property doesn't change on upgrade from older versions. Note that this setting is distinct from the Privacy Extensions as configured by "ip6-privacy" property and it does not affect the temporary addresses configured with this option.
address-dataarray of vardict Array of IPv6 addresses. Each address dictionary contains at least 'address' and 'prefix' entries, containing the IP address as a string, and the prefix length as a uint32. Additional attributes may also exist on some addresses.
addressesarray of legacy IPv6 address struct (a(ayuay))[]Deprecated in favor of the 'address-data' and 'gateway' properties, but this can be used for backward-compatibility with older daemons. Note that if you send this property the daemon will ignore 'address-data' and 'gateway'. Array of IPv6 address structures. Each IPv6 address structure is composed of an IPv6 address, a prefix length (1 - 128), and an IPv6 gateway address. The gateway may be zeroed out if no gateway exists for that subnet.
dad-timeoutint32-1Timeout in milliseconds used to check for the presence of duplicate IP addresses on the network. If an address conflict is detected, the activation will fail. A zero value means that no duplicate address detection is performed, -1 means the default value (either configuration ipvx.dad-timeout override or 3 seconds). A value greater than zero is a timeout in milliseconds.
dhcp-hostnamestring If the "dhcp-send-hostname" property is TRUE, then the specified name will be sent to the DHCP server when acquiring a lease. This property and "dhcp-fqdn" are mutually exclusive and cannot be set at the same time.
dhcp-send-hostnamebooleanTRUEIf TRUE, a hostname is sent to the DHCP server when acquiring a lease. Some DHCP servers use this hostname to update DNS databases, essentially providing a static hostname for the computer. If the "dhcp-hostname" property is NULL and this property is TRUE, the current persistent hostname of the computer is sent.
dhcp-timeoutint320A timeout for a DHCP transaction in seconds.
dnsarray of byte array[]Array of IP addresses of DNS servers (in network byte order)
dns-optionsarray of string[]Array of DNS options. NULL means that the options are unset and left at the default. In this case NetworkManager will use default options. This is distinct from an empty list of properties.
dns-priorityint320DNS priority. The relative priority to be used when determining the order of DNS servers in resolv.conf. A lower value means that servers will be on top of the file. Zero selects the default value, which is 50 for VPNs and 100 for other connections. When multiple devices have configurations with the same priority, the one with an active default route will be preferred. Note that when using dns=dnsmasq the order is meaningless since dnsmasq forwards queries to all known servers at the same time. Negative values have the special effect of excluding other configurations with a greater priority value; so in presence of at least a negative priority, only DNS servers from configurations with the lowest priority value will be used.
dns-searcharray of string[]Array of DNS search domains.
gatewaystring The gateway associated with this configuration. This is only meaningful if "addresses" is also set.
ignore-auto-dnsbooleanFALSEWhen "method" is set to "auto" and this property to TRUE, automatically configured nameservers and search domains are ignored and only nameservers and search domains specified in the "dns" and "dns-search" properties, if any, are used.
ignore-auto-routesbooleanFALSEWhen "method" is set to "auto" and this property to TRUE, automatically configured routes are ignored and only routes specified in the "routes" property, if any, are used.
ip6-privacyNMSettingIP6ConfigPrivacy (int32) Configure IPv6 Privacy Extensions for SLAAC, described in RFC4941. If enabled, it makes the kernel generate a temporary IPv6 address in addition to the public one generated from MAC address via modified EUI-64. This enhances privacy, but could cause problems in some applications, on the other hand. The permitted values are: -1: unknown, 0: disabled, 1: enabled (prefer public address), 2: enabled (prefer temporary addresses). Having a per-connection setting set to "-1" (unknown) means fallback to global configuration "ipv6.ip6-privacy". If also global configuration is unspecified or set to "-1", fallback to read "/proc/sys/net/ipv6/conf/default/use_tempaddr". Note that this setting is distinct from the Stable Privacy addresses that can be enabled with the "addr-gen-mode" property's "stable-privacy" setting as another way of avoiding host tracking with IPv6 addresses.
may-failbooleanTRUEIf TRUE, allow overall network configuration to proceed even if the configuration specified by this property times out. Note that at least one IP configuration must succeed or overall network configuration will still fail. For example, in IPv6-only networks, setting this property to TRUE on the NMSettingIP4Config allows the overall network configuration to succeed if IPv4 configuration fails but IPv6 configuration completes successfully.
methodstring IP configuration method. NMSettingIP4Config and NMSettingIP6Config both support "auto", "manual", and "link-local". See the subclass-specific documentation for other values. In general, for the "auto" method, properties such as "dns" and "routes" specify information that is added on to the information returned from automatic configuration. The "ignore-auto-routes" and "ignore-auto-dns" properties modify this behavior. For methods that imply no upstream network, such as "shared" or "link-local", these properties must be empty. For IPv4 method "shared", the IP subnet can be configured by adding one manual IPv4 address or otherwise 10.42.x.0/24 is chosen.
namestringipv6The setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
never-defaultbooleanFALSEIf TRUE, this connection will never be the default connection for this IP type, meaning it will never be assigned the default route by NetworkManager.
route-dataarray of vardict Array of IPv6 routes. Each route dictionary contains at least 'dest' and 'prefix' entries, containing the destination IP address as a string, and the prefix length as a uint32. Most routes will also have a 'next-hop' entry, containing the next hop IP address as a string. If the route has a 'metric' entry (containing a uint32), that will be used as the metric for the route (otherwise NM will pick a default value appropriate to the device). Additional attributes may also exist on some routes.
route-metricint64-1The default metric for routes that don't explicitly specify a metric. The default value -1 means that the metric is choosen automatically based on the device type. The metric applies to dynamic routes, manual (static) routes that don't have an explicit metric setting, address prefix routes, and the default route. Note that for IPv6, the kernel accepts zero (0) but coerces it to 1024 (user default). Hence, setting this property to zero effectively mean setting it to 1024. For IPv4, zero is a regular value for the metric.
routesarray of legacy IPv6 route struct (a(ayuayu))[]Deprecated in favor of the 'route-data' property, but this can be used for backward-compatibility with older daemons. Note that if you send this property the daemon will ignore 'route-data'. Array of IPv6 route structures. Each IPv6 route structure is composed of an IPv6 address, a prefix length (1 - 128), an IPv6 next hop address (which may be zeroed out if there is no next hop), and a metric. If the metric is 0, NM will choose an appropriate default metric for the device.
tokenstring Configure the token for draft-chown-6man-tokenised-ipv6-identifiers-02 IPv6 tokenized interface identifiers. Useful with eui64 addr-gen-mode.

Table 15. ip-tunnel setting

Key NameValue TypeDefault ValueValue Description
encapsulation-limituint320How many additional levels of encapsulation are permitted to be prepended to packets. This property applies only to IPv6 tunnels.
flow-labeluint320The flow label to assign to tunnel packets. This property applies only to IPv6 tunnels.
input-keystring The key used for tunnel input packets; the property is valid only for certain tunnel modes (GRE, IP6GRE). If empty, no key is used.
localstring The local endpoint of the tunnel; the value can be empty, otherwise it must contain an IPv4 or IPv6 address.
modeuint320The tunneling mode, for example NM_IP_TUNNEL_MODE_IPIP (1) or NM_IP_TUNNEL_MODE_GRE (2).
mtuuint320None
namestringip-tunnelThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
output-keystring The key used for tunnel output packets; the property is valid only for certain tunnel modes (GRE, IP6GRE). If empty, no key is used.
parentstring If given, specifies the parent interface name or parent connection UUID the new device will be bound to so that tunneled packets will only be routed via that interface.
path-mtu-discoverybooleanTRUEWhether to enable Path MTU Discovery on this tunnel.
remotestring The remote endpoint of the tunnel; the value must contain an IPv4 or IPv6 address.
tosuint320The type of service (IPv4) or traffic class (IPv6) field to be set on tunneled packets.
ttluint320The TTL to assign to tunneled packets. 0 is a special value meaning that packets inherit the TTL value.

Table 16. macvlan setting

Key NameValue TypeDefault ValueValue Description
modeuint320The macvlan mode, which specifies the communication mechanism between multiple macvlans on the same lower device.
namestringmacvlanThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
parentstring If given, specifies the parent interface name or parent connection UUID from which this MAC-VLAN interface should be created. If this property is not specified, the connection must contain an "802-3-ethernet" setting with a "mac-address" property.
promiscuousbooleanTRUEWhether the interface should be put in promiscuous mode.
tapbooleanFALSEWhether the interface should be a MACVTAP.

Table 17. 802-11-olpc-mesh setting

Key NameValue TypeDefault ValueValue Description
channeluint320Channel on which the mesh network to join is located.
dhcp-anycast-addressbyte array Anycast DHCP MAC address used when requesting an IP address via DHCP. The specific anycast address used determines which DHCP server class answers the request.
namestring802-11-olpc-meshThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
ssidbyte array SSID of the mesh network to join.

Table 18. ppp setting

Key NameValue TypeDefault ValueValue Description
bauduint320If non-zero, instruct pppd to set the serial port to the specified baudrate. This value should normally be left as 0 to automatically choose the speed.
crtsctsbooleanFALSEIf TRUE, specify that pppd should set the serial port to use hardware flow control with RTS and CTS signals. This value should normally be set to FALSE.
lcp-echo-failureuint320If non-zero, instruct pppd to presume the connection to the peer has failed if the specified number of LCP echo-requests go unanswered by the peer. The "lcp-echo-interval" property must also be set to a non-zero value if this property is used.
lcp-echo-intervaluint320If non-zero, instruct pppd to send an LCP echo-request frame to the peer every n seconds (where n is the specified value). Note that some PPP peers will respond to echo requests and some will not, and it is not possible to autodetect this.
mppe-statefulbooleanFALSEIf TRUE, stateful MPPE is used. See pppd documentation for more information on stateful MPPE.
mruuint320If non-zero, instruct pppd to request that the peer send packets no larger than the specified size. If non-zero, the MRU should be between 128 and 16384.
mtuuint320If non-zero, instruct pppd to send packets no larger than the specified size.
namestringpppThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
no-vj-compbooleanFALSEIf TRUE, Van Jacobsen TCP header compression will not be requested.
noauthbooleanTRUEIf TRUE, do not require the other side (usually the PPP server) to authenticate itself to the client. If FALSE, require authentication from the remote side. In almost all cases, this should be TRUE.
nobsdcompbooleanFALSEIf TRUE, BSD compression will not be requested.
nodeflatebooleanFALSEIf TRUE, "deflate" compression will not be requested.
refuse-chapbooleanFALSEIf TRUE, the CHAP authentication method will not be used.
refuse-eapbooleanFALSEIf TRUE, the EAP authentication method will not be used.
refuse-mschapbooleanFALSEIf TRUE, the MSCHAP authentication method will not be used.
refuse-mschapv2booleanFALSEIf TRUE, the MSCHAPv2 authentication method will not be used.
refuse-papbooleanFALSEIf TRUE, the PAP authentication method will not be used.
require-mppebooleanFALSEIf TRUE, MPPE (Microsoft Point-to-Point Encrpytion) will be required for the PPP session. If either 64-bit or 128-bit MPPE is not available the session will fail. Note that MPPE is not used on mobile broadband connections.
require-mppe-128booleanFALSEIf TRUE, 128-bit MPPE (Microsoft Point-to-Point Encrpytion) will be required for the PPP session, and the "require-mppe" property must also be set to TRUE. If 128-bit MPPE is not available the session will fail.

Table 19. pppoe setting

Key NameValue TypeDefault ValueValue Description
namestringpppoeThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
passwordstring Password used to authenticate with the PPPoE service.
password-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "password" property. (see the section called “Secret flag types:” for flag values)
servicestring If specified, instruct PPPoE to only initiate sessions with access concentrators that provide the specified service. For most providers, this should be left blank. It is only required if there are multiple access concentrators or a specific service is known to be required.
usernamestring Username used to authenticate with the PPPoE service.

Table 20. proxy setting

Key NameValue TypeDefault ValueValue Description
browser-onlybooleanFALSETRUE if Proxy is for Browser Stuff.
methodint320Method for proxy configuration, Default is "NONE"
namestringproxyThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
pac-scriptstring PAC Script For the connection.
pac-urlstring PAC Url for obtaining PAC File.

Table 21. serial setting

Key NameValue TypeDefault ValueValue Description
bauduint3257600Speed to use for communication over the serial port. Note that this value usually has no effect for mobile broadband modems as they generally ignore speed settings and use the highest available speed.
bitsuint328Byte-width of the serial communication. The 8 in "8n1" for example.
namestringserialThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
paritybyte The connection parity: 69 (ASCII 'E') for even parity, 111 (ASCII 'o') for odd, 110 (ASCII 'n') for none.
send-delayuint640Time to delay between each byte sent to the modem, in microseconds.
stopbitsuint321Number of stop bits for communication on the serial port. Either 1 or 2. The 1 in "8n1" for example.

Table 22. team setting

Key NameValue TypeDefault ValueValue Description
configstring The JSON configuration for the team network interface. The property should contain raw JSON configuration data suitable for teamd, because the value is passed directly to teamd. If not specified, the default configuration is used. See man teamd.conf for the format details.
interface-namestring Deprecated in favor of connection.interface-name, but can be used for backward-compatibility with older daemons, to set the team's interface name.
namestringteamThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".

Table 23. team-port setting

Key NameValue TypeDefault ValueValue Description
configstring The JSON configuration for the team port. The property should contain raw JSON configuration data suitable for teamd, because the value is passed directly to teamd. If not specified, the default configuration is used. See man teamd.conf for the format details.
namestringteam-portThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".

Table 24. tun setting

Key NameValue TypeDefault ValueValue Description
groupstring The group ID which will own the device. If set to NULL everyone will be able to use the device.
modeuint321The operating mode of the virtual device. Allowed values are NM_SETTING_TUN_MODE_TUN (1) to create a layer 3 device and NM_SETTING_TUN_MODE_TAP (2) to create an Ethernet-like layer 2 one.
multi-queuebooleanFALSEIf the property is set to TRUE, the interface will support multiple file descriptors (queues) to parallelize packet sending or receiving. Otherwise, the interface will only support a single queue.
namestringtunThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
ownerstring The user ID which will own the device. If set to NULL everyone will be able to use the device.
pibooleanFALSEIf TRUE the interface will prepend a 4 byte header describing the physical interface to the packets.
vnet-hdrbooleanFALSEIf TRUE the IFF_VNET_HDR the tunnel packets will include a virtio network header.

Table 25. vlan setting

Key NameValue TypeDefault ValueValue Description
egress-priority-maparray of string[]For outgoing packets, a list of mappings from Linux SKB priorities to 802.1p priorities. The mapping is given in the format "from:to" where both "from" and "to" are unsigned integers, ie "7:3".
flagsNMVlanFlags (uint32) One or more flags which control the behavior and features of the VLAN interface. Flags include NM_VLAN_FLAG_REORDER_HEADERS (0x1) (reordering of output packet headers), NM_VLAN_FLAG_GVRP (0x2) (use of the GVRP protocol), and NM_VLAN_FLAG_LOOSE_BINDING (0x4) (loose binding of the interface to its master device's operating state). NM_VLAN_FLAG_MVRP (0x8) (use of the MVRP protocol). The default value of this property is NM_VLAN_FLAG_REORDER_HEADERS, but it used to be 0. To preserve backward compatibility, the default-value in the D-Bus API continues to be 0 and a missing property on D-Bus is still considered as 0.
iduint320The VLAN identifier that the interface created by this connection should be assigned. The valid range is from 0 to 4094, without the reserved id 4095.
ingress-priority-maparray of string[]For incoming packets, a list of mappings from 802.1p priorities to Linux SKB priorities. The mapping is given in the format "from:to" where both "from" and "to" are unsigned integers, ie "7:3".
interface-namestring Deprecated in favor of connection.interface-name, but can be used for backward-compatibility with older daemons, to set the vlan's interface name.
namestringvlanThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
parentstring If given, specifies the parent interface name or parent connection UUID from which this VLAN interface should be created. If this property is not specified, the connection must contain an "802-3-ethernet" setting with a "mac-address" property.

Table 26. vpn setting

Key NameValue TypeDefault ValueValue Description
datadict of string to string{}Dictionary of key/value pairs of VPN plugin specific data. Both keys and values must be strings.
namestringvpnThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
persistentbooleanFALSEIf the VPN service supports persistence, and this property is TRUE, the VPN will attempt to stay connected across link changes and outages, until explicitly disconnected.
secretsdict of string to string{}Dictionary of key/value pairs of VPN plugin specific secrets like passwords or private keys. Both keys and values must be strings.
service-typestring D-Bus service name of the VPN plugin that this setting uses to connect to its network. i.e. org.freedesktop.NetworkManager.vpnc for the vpnc plugin.
timeoutuint320Timeout for the VPN service to establish the connection. Some services may take quite a long time to connect. Value of 0 means a default timeout, which is 60 seconds (unless overriden by vpn.timeout in configuration file). Values greater than zero mean timeout in seconds.
user-namestring If the VPN connection requires a user name for authentication, that name should be provided here. If the connection is available to more than one user, and the VPN requires each user to supply a different name, then leave this property empty. If this property is empty, NetworkManager will automatically supply the username of the user which requested the VPN connection.

Table 27. vxlan setting

Key NameValue TypeDefault ValueValue Description
ageinguint32300Specifies the lifetime in seconds of FDB entries learnt by the kernel.
destination-portuint328472Specifies the UDP destination port to communicate to the remote VXLAN tunnel endpoint.
iduint320Specifies the VXLAN Network Identifer (or VXLAN Segment Identifier) to use.
l2-missbooleanFALSESpecifies whether netlink LL ADDR miss notifications are generated.
l3-missbooleanFALSESpecifies whether netlink IP ADDR miss notifications are generated.
learningbooleanTRUESpecifies whether unknown source link layer addresses and IP addresses are entered into the VXLAN device forwarding database.
limituint320Specifies the maximum number of FDB entries. A value of zero means that the kernel will store unlimited entries.
localstring If given, specifies the source IP address to use in outgoing packets.
namestringvxlanThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
parentstring If given, specifies the parent interface name or parent connection UUID.
proxybooleanFALSESpecifies whether ARP proxy is turned on.
remotestring Specifies the unicast destination IP address to use in outgoing packets when the destination link layer address is not known in the VXLAN device forwarding database, or the multicast IP address to join.
rscbooleanFALSESpecifies whether route short circuit is turned on.
source-port-maxuint320Specifies the maximum UDP source port to communicate to the remote VXLAN tunnel endpoint.
source-port-minuint320Specifies the minimum UDP source port to communicate to the remote VXLAN tunnel endpoint.
tosuint320Specifies the TOS value to use in outgoing packets.
ttluint320Specifies the time-to-live value to use in outgoing packets.

Table 28. wimax setting

Key NameValue TypeDefault ValueValue Description
mac-addressbyte array If specified, this connection will only apply to the WiMAX device whose MAC address matches. This property does not change the MAC address of the device (known as MAC spoofing). Deprecated: 1
namestringwimaxThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
network-namestring Network Service Provider (NSP) name of the WiMAX network this connection should use. Deprecated: 1

Table 29. 802-3-ethernet setting

Key NameValue TypeDefault ValueValue Description
assigned-mac-addressstring The new field for the cloned MAC address. It can be either a hardware address in ASCII representation, or one of the special values "preserve", "permanent", "random" or "stable". This field replaces the deprecated "cloned-mac-address" on D-Bus, which can only contain explict hardware addresses. Note that this property only exists in D-Bus API. libnm and nmcli continue to call this property "cloned-mac-address".
auto-negotiatebooleanTRUEIf TRUE, allow auto-negotiation of port speed and duplex mode. If FALSE, do not allow auto-negotiation, in which case the "speed" and "duplex" properties should be set.
cloned-mac-addressbyte array This D-Bus field is deprecated in favor of "assigned-mac-address" which is more flexible and allows specifying special variants like "random". For libnm and nmcli, this field is called "cloned-mac-address".
duplexstring If specified, request that the device only use the specified duplex mode. Either "half" or "full".
generate-mac-address-maskstring With "cloned-mac-address" setting "random" or "stable", by default all bits of the MAC address are scrambled and a locally-administered, unicast MAC address is created. This property allows to specify that certain bits are fixed. Note that the least significant bit of the first MAC address will always be unset to create a unicast MAC address. If the property is NULL, it is eligible to be overwritten by a default connection setting. If the value is still NULL or an empty string, the default is to create a locally-administered, unicast MAC address. If the value contains one MAC address, this address is used as mask. The set bits of the mask are to be filled with the current MAC address of the device, while the unset bits are subject to randomization. Setting "FE:FF:FF:00:00:00" means to preserve the OUI of the current MAC address and only randomize the lower 3 bytes using the "random" or "stable" algorithm. If the value contains one additional MAC address after the mask, this address is used instead of the current MAC address to fill the bits that shall not be randomized. For example, a value of "FE:FF:FF:00:00:00 68:F7:28:00:00:00" will set the OUI of the MAC address to 68:F7:28, while the lower bits are randomized. A value of "02:00:00:00:00:00 00:00:00:00:00:00" will create a fully scrambled globally-administered, burned-in MAC address. If the value contains more then one additional MAC addresses, one of them is chosen randomly. For example, "02:00:00:00:00:00 00:00:00:00:00:00 02:00:00:00:00:00" will create a fully scrambled MAC address, randomly locally or globally administered.
mac-addressbyte array If specified, this connection will only apply to the Ethernet device whose permanent MAC address matches. This property does not change the MAC address of the device (i.e. MAC spoofing).
mac-address-blacklistarray of string[]If specified, this connection will never apply to the Ethernet device whose permanent MAC address matches an address in the list. Each MAC address is in the standard hex-digits-and-colons notation (00:11:22:33:44:55).
mtuuint320If non-zero, only transmit packets of the specified size or smaller, breaking larger packets up into multiple Ethernet frames.
namestring802-3-ethernetThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
portstring Specific port type to use if multiple the device supports multiple attachment methods. One of "tp" (Twisted Pair), "aui" (Attachment Unit Interface), "bnc" (Thin Ethernet) or "mii" (Media Independent Interface. If the device supports only one port type, this setting is ignored.
s390-nettypestring s390 network device type; one of "qeth", "lcs", or "ctc", representing the different types of virtual network devices available on s390 systems.
s390-optionsdict of string to string{}Dictionary of key/value pairs of s390-specific device options. Both keys and values must be strings. Allowed keys include "portno", "layer2", "portname", "protocol", among others. Key names must contain only alphanumeric characters (ie, [a-zA-Z0-9]).
s390-subchannelsarray of string[]Identifies specific subchannels that this network device uses for communication with z/VM or s390 host. Like the "mac-address" property for non-z/VM devices, this property can be used to ensure this connection only applies to the network device that uses these subchannels. The list should contain exactly 3 strings, and each string may only be composed of hexadecimal characters and the period (.) character.
speeduint320If non-zero, request that the device use only the specified speed. In Mbit/s, ie 100 == 100Mbit/s.
wake-on-lanuint321The NMSettingWiredWakeOnLan options to enable. Not all devices support all options. May be any combination of NM_SETTING_WIRED_WAKE_ON_LAN_PHY (0x2), NM_SETTING_WIRED_WAKE_ON_LAN_UNICAST (0x4), NM_SETTING_WIRED_WAKE_ON_LAN_MULTICAST (0x8), NM_SETTING_WIRED_WAKE_ON_LAN_BROADCAST (0x10), NM_SETTING_WIRED_WAKE_ON_LAN_ARP (0x20), NM_SETTING_WIRED_WAKE_ON_LAN_MAGIC (0x40) or the special values NM_SETTING_WIRED_WAKE_ON_LAN_DEFAULT (0x1) (to use global settings) and NM_SETTING_WIRED_WAKE_ON_LAN_IGNORE (0x8000) (to disable management of Wake-on-LAN in NetworkManager).
wake-on-lan-passwordstring If specified, the password used with magic-packet-based Wake-on-LAN, represented as an Ethernet MAC address. If NULL, no password will be required.

Table 30. 802-11-wireless setting

Key NameValue TypeDefault ValueValue Description
assigned-mac-addressstring The new field for the cloned MAC address. It can be either a hardware address in ASCII representation, or one of the special values "preserve", "permanent", "random" or "stable". This field replaces the deprecated "cloned-mac-address" on D-Bus, which can only contain explict hardware addresses. Note that this property only exists in D-Bus API. libnm and nmcli continue to call this property "cloned-mac-address".
bandstring 802.11 frequency band of the network. One of "a" for 5GHz 802.11a or "bg" for 2.4GHz 802.11. This will lock associations to the Wi-Fi network to the specific band, i.e. if "a" is specified, the device will not associate with the same network in the 2.4GHz band even if the network's settings are compatible. This setting depends on specific driver capability and may not work with all drivers.
bssidbyte array If specified, directs the device to only associate with the given access point. This capability is highly driver dependent and not supported by all devices. Note: this property does not control the BSSID used when creating an Ad-Hoc network and is unlikely to in the future.
channeluint320Wireless channel to use for the Wi-Fi connection. The device will only join (or create for Ad-Hoc networks) a Wi-Fi network on the specified channel. Because channel numbers overlap between bands, this property also requires the "band" property to be set.
cloned-mac-addressbyte array This D-Bus field is deprecated in favor of "assigned-mac-address" which is more flexible and allows specifying special variants like "random". For libnm and nmcli, this field is called "cloned-mac-address".
generate-mac-address-maskstring With "cloned-mac-address" setting "random" or "stable", by default all bits of the MAC address are scrambled and a locally-administered, unicast MAC address is created. This property allows to specify that certain bits are fixed. Note that the least significant bit of the first MAC address will always be unset to create a unicast MAC address. If the property is NULL, it is eligible to be overwritten by a default connection setting. If the value is still NULL or an empty string, the default is to create a locally-administered, unicast MAC address. If the value contains one MAC address, this address is used as mask. The set bits of the mask are to be filled with the current MAC address of the device, while the unset bits are subject to randomization. Setting "FE:FF:FF:00:00:00" means to preserve the OUI of the current MAC address and only randomize the lower 3 bytes using the "random" or "stable" algorithm. If the value contains one additional MAC address after the mask, this address is used instead of the current MAC address to fill the bits that shall not be randomized. For example, a value of "FE:FF:FF:00:00:00 68:F7:28:00:00:00" will set the OUI of the MAC address to 68:F7:28, while the lower bits are randomized. A value of "02:00:00:00:00:00 00:00:00:00:00:00" will create a fully scrambled globally-administered, burned-in MAC address. If the value contains more then one additional MAC addresses, one of them is chosen randomly. For example, "02:00:00:00:00:00 00:00:00:00:00:00 02:00:00:00:00:00" will create a fully scrambled MAC address, randomly locally or globally administered.
hiddenbooleanFALSEIf TRUE, indicates this network is a non-broadcasting network that hides its SSID. In this case various workarounds may take place, such as probe-scanning the SSID for more reliable network discovery. However, these workarounds expose inherent insecurities with hidden SSID networks, and thus hidden SSID networks should be used with caution.
mac-addressbyte array If specified, this connection will only apply to the Wi-Fi device whose permanent MAC address matches. This property does not change the MAC address of the device (i.e. MAC spoofing).
mac-address-blacklistarray of string[]A list of permanent MAC addresses of Wi-Fi devices to which this connection should never apply. Each MAC address should be given in the standard hex-digits-and-colons notation (eg "00:11:22:33:44:55").
mac-address-randomizationuint320One of NM_SETTING_MAC_RANDOMIZATION_DEFAULT (0) (never randomize unless the user has set a global default to randomize and the supplicant supports randomization), NM_SETTING_MAC_RANDOMIZATION_NEVER (1) (never randomize the MAC address), or NM_SETTING_MAC_RANDOMIZATION_ALWAYS (2) (always randomize the MAC address). This property is deprecated for 'cloned-mac-address'. Deprecated: 1
modestring Wi-Fi network mode; one of "infrastructure", "adhoc" or "ap". If blank, infrastructure is assumed.
mtuuint320If non-zero, only transmit packets of the specified size or smaller, breaking larger packets up into multiple Ethernet frames.
namestring802-11-wirelessThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
powersaveuint320One of NM_SETTING_WIRELESS_POWERSAVE_DISABLE (2) (disable Wi-Fi power saving), NM_SETTING_WIRELESS_POWERSAVE_ENABLE (3) (enable Wi-Fi power saving), NM_SETTING_WIRELESS_POWERSAVE_IGNORE (1) (don't touch currently configure setting) or NM_SETTING_WIRELESS_POWERSAVE_DEFAULT (0) (use the globally configured value). All other values are reserved.
rateuint320If non-zero, directs the device to only use the specified bitrate for communication with the access point. Units are in Kb/s, ie 5500 = 5.5 Mbit/s. This property is highly driver dependent and not all devices support setting a static bitrate.
securityNone This property is deprecated, but can be set to the value '802-11-wireless-security' when a wireless security setting is also present in the connection dictionary, for compatibility with very old NetworkManager daemons.
seen-bssidsarray of string[]A list of BSSIDs (each BSSID formatted as a MAC address like "00:11:22:33:44:55") that have been detected as part of the Wi-Fi network. NetworkManager internally tracks previously seen BSSIDs. The property is only meant for reading and reflects the BSSID list of NetworkManager. The changes you make to this property will not be preserved.
ssidbyte array SSID of the Wi-Fi network. Must be specified.
tx-poweruint320If non-zero, directs the device to use the specified transmit power. Units are dBm. This property is highly driver dependent and not all devices support setting a static transmit power.

Table 31. 802-11-wireless-security setting

Key NameValue TypeDefault ValueValue Description
auth-algstring When WEP is used (ie, key-mgmt = "none" or "ieee8021x") indicate the 802.11 authentication algorithm required by the AP here. One of "open" for Open System, "shared" for Shared Key, or "leap" for Cisco LEAP. When using Cisco LEAP (ie, key-mgmt = "ieee8021x" and auth-alg = "leap") the "leap-username" and "leap-password" properties must be specified.
grouparray of string[]A list of group/broadcast encryption algorithms which prevents connections to Wi-Fi networks that do not utilize one of the algorithms in the list. For maximum compatibility leave this property empty. Each list element may be one of "wep40", "wep104", "tkip", or "ccmp".
key-mgmtstring Key management used for the connection. One of "none" (WEP), "ieee8021x" (Dynamic WEP), "wpa-none" (Ad-Hoc WPA-PSK), "wpa-psk" (infrastructure WPA-PSK), or "wpa-eap" (WPA-Enterprise). This property must be set for any Wi-Fi connection that uses security.
leap-passwordstring The login password for legacy LEAP connections (ie, key-mgmt = "ieee8021x" and auth-alg = "leap").
leap-password-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "leap-password" property. (see the section called “Secret flag types:” for flag values)
leap-usernamestring The login username for legacy LEAP connections (ie, key-mgmt = "ieee8021x" and auth-alg = "leap").
namestring802-11-wireless-securityThe setting's name, which uniquely identifies the setting within the connection. Each setting type has a name unique to that type, for example "ppp" or "wireless" or "wired".
pairwisearray of string[]A list of pairwise encryption algorithms which prevents connections to Wi-Fi networks that do not utilize one of the algorithms in the list. For maximum compatibility leave this property empty. Each list element may be one of "tkip" or "ccmp".
protoarray of string[]List of strings specifying the allowed WPA protocol versions to use. Each element may be one "wpa" (allow WPA) or "rsn" (allow WPA2/RSN). If not specified, both WPA and RSN connections are allowed.
pskstring Pre-Shared-Key for WPA networks. If the key is 64-characters long, it must contain only hexadecimal characters and is interpreted as a hexadecimal WPA key. Otherwise, the key must be between 8 and 63 ASCII characters (as specified in the 802.11i standard) and is interpreted as a WPA passphrase, and is hashed to derive the actual WPA-PSK used when connecting to the Wi-Fi network.
psk-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "psk" property. (see the section called “Secret flag types:” for flag values)
wep-key-flagsNMSettingSecretFlags (uint32) Flags indicating how to handle the "wep-key0", "wep-key1", "wep-key2", and "wep-key3" properties. (see the section called “Secret flag types:” for flag values)
wep-key-typeNMWepKeyType (uint32) Controls the interpretation of WEP keys. Allowed values are NM_WEP_KEY_TYPE_KEY (1), in which case the key is either a 10- or 26-character hexadecimal string, or a 5- or 13-character ASCII password; or NM_WEP_KEY_TYPE_PASSPHRASE (2), in which case the passphrase is provided as a string and will be hashed using the de-facto MD5 method to derive the actual WEP key.
wep-key0string Index 0 WEP key. This is the WEP key used in most networks. See the "wep-key-type" property for a description of how this key is interpreted.
wep-key1string Index 1 WEP key. This WEP index is not used by most networks. See the "wep-key-type" property for a description of how this key is interpreted.
wep-key2string Index 2 WEP key. This WEP index is not used by most networks. See the "wep-key-type" property for a description of how this key is interpreted.
wep-key3string Index 3 WEP key. This WEP index is not used by most networks. See the "wep-key-type" property for a description of how this key is interpreted.
wep-tx-keyidxuint320When static WEP is used (ie, key-mgmt = "none") and a non-default WEP key index is used by the AP, put that WEP key index here. Valid values are 0 (default key) through 3. Note that some consumer access points (like the Linksys WRT54G) number the keys 1 - 4.

Secret flag types

Each secret property in a setting has an associated flags property that describes how to handle that secret. The flags property is a bitfield that contains zero or more of the following values logically OR-ed together.

· 0x0 (none) - the system is responsible for providing and storing this secret.

· 0x1 (agent-owned) - a user-session secret agent is responsible for providing and storing this secret; when it is required, agents will be asked to provide it.

· 0x2 (not-saved) - this secret should not be saved but should be requested from the user each time it is required. This flag should be used for One-Time-Pad secrets, PIN codes from hardware tokens, or if the user simply does not want to save the secret.

· 0x4 (not-required) - in some situations it cannot be automatically determined that a secret is required or not. This flag hints that the secret is not required and should not be requested from the user.

Files

/etc/NetworkManager/system-connections or distro plugin-specific location

See Also

NetworkManager(8), nmcli(1), nmcli-examples(7), NetworkManager.conf(5)

Referenced By

NetworkManager(8), NetworkManager.conf(5), nmcli(1), nmcli-examples(7), nm-settings-ifcfg-rh(5), nm-settings-keyfile(5).

NetworkManager 1.5.2 Configuration