ip man page

ip — show / manipulate routing, devices, policy routing and tunnels

TL;DR

ip a

ip r

ip link set {{interface}} up/down

ip addr add/del {{ip}}/{{mask}} dev {{interface}}

ip route add default via {{ip}} dev {{interface}}

Synopsis

ip [ Options ] Object { Command | help }
ip [ -force ] -batch filename
Object := { link | address | addrlabel | route | rule | neigh | ntable | tunnel | tuntap | maddress | mroute | mrule | monitor | xfrm | netns | l2tp | tcp_metrics | token }
Options := { -V[ersion] | -h[uman-readable] | -s[tatistics] | -d[etails] | -r[esolve] | -iec | -f[amily] { inet | inet6 | ipx | dnet | link } | -4 | -6 | -I | -D | -B | -0 | -l[oops] { maximum-addr-flush-attempts } | -o[neline] | -rc[vbuf] [size] | -t[imestamp] | -ts[hort] | -n[etns] name | -a[ll] | -c[olor] }

Options

-V, -Version
Print the version of the ip utility and exit.
-h, -human, -human-readable
output statistics with human readable values followed by suffix.
-b, -batch <FILENAME>
Read commands from provided file or standard input and invoke them. First failure will cause termination of ip.
-force
Don't terminate ip on errors in batch mode. If there were any errors during execution of the commands, the application return code will be non zero.
-s, -stats, -statistics
Output more information. If the option appears twice or more, the amount of information increases. As a rule, the information is statistics or some time values.
-d, -details
Output more detailed information.
-l, -loops <COUNT>
Specify maximum number of loops the 'ip address flush' logic will attempt before giving up. The default is 10. Zero (0) means loop until all addresses are removed.
-f, -family <FAMILY>
Specifies the protocol family to use. The protocol family identifier can be one of inet, inet6, bridge, ipx, dnet, mpls or link. If this option is not present, the protocol family is guessed from other arguments. If the rest of the command line does not give enough information to guess the family, ip falls back to the default one, usually inet or any. link is a special family identifier meaning that no networking protocol is involved.
-4
shortcut for -family inet.
-6
shortcut for -family inet6.
-B
shortcut for -family bridge.
-D
shortcut for -family decnet.
-I
shortcut for -family ipx.
-M
shortcut for -family mpls.
-0
shortcut for -family link.
-o, -oneline
output each record on a single line, replacing line feeds with the '\' character. This is convenient when you want to count records with wc(1) or to grep(1) the output.
-r, -resolve
use the system's name resolver to print DNS names instead of host addresses.
-n, -netns <NETNS>

switches ip to the specified network namespace NETNS. Actually it just simplifies executing of:

ip netns exec NETNS ip [ Options ] Object { Command | help }

to

ip -n[etns] NETNS [ Options ] Object { Command | help }

-a, -all
executes specified command over all objects, it depends if command supports this option.
-c, -color
Use color output.
-t, -timestamp
display current time when using monitor option.
-ts, -tshort
Like -timestamp, but use shorter format.
-rc, -rcvbuf<SIZE>
Set the netlink socket receive buffer size, defaults to 1MB.
-iec
print human readable rates in IEC units (e.g. 1Ki = 1024).

IP - Command Syntax

Object

address
- protocol (IP or IPv6) address on a device.
addrlabel
- label configuration for protocol address selection.
l2tp
- tunnel ethernet over IP (L2TPv3).
link
- network device.
maddress
- multicast address.
monitor
- watch for netlink messages.
mroute
- multicast routing cache entry.
mrule
- rule in multicast routing policy database.
neighbour
- manage ARP or NDISC cache entries.
netns
- manage network namespaces.
ntable
- manage the neighbor cache's operation.
route
- routing table entry.
rule
- rule in routing policy database.
tcp_metrics/tcpmetrics
- manage TCP Metrics
token
- manage tokenized interface identifiers.
tunnel
- tunnel over IP.
tuntap
- manage TUN/TAP devices.
xfrm
- manage IPSec policies.

The names of all objects may be written in full or abbreviated form, for example address can be abbreviated as addr or just a.

Command

Specifies the action to perform on the object. The set of possible actions depends on the object type. As a rule, it is possible to add, delete and show (or list ) objects, but some objects do not allow all of these operations or have some additional commands. The help command is available for all objects. It prints out a list of available commands and argument syntax conventions.

If no command is given, some default command is assumed. Usually it is list or, if the objects of this class cannot be listed, help.

Exit Status

Exit status is 0 if command was successful, and 1 if there is a syntax error. If an error was reported by the kernel exit status is 2.

History

ip was written by Alexey N. Kuznetsov and added in Linux 2.2.

See Also

ip-address(8), ip-addrlabel(8), ip-l2tp(8), ip-link(8), ip-maddress(8), ip-monitor(8), ip-mroute(8), ip-neighbour(8), ip-netns(8), ip-ntable(8), ip-route(8), ip-rule(8), ip-tcp_metrics(8), ip-token(8), ip-tunnel(8), ip-xfrm(8)
IP Command reference ip-cref.ps

Reporting Bugs

Report any bugs to the Network Developers mailing list <netdev@vger.kernel.org> where the development and maintenance is primarily done. You do not have to be subscribed to the list to send a message there.

Author

Original Manpage by Michail Litvak <mci@owl.openwall.com>

Referenced By

arp(8), avahi-autoipd.action(8), bmon(8), bridge(8), ctdbd.conf(5), firehol-connmark(5), firehol-dscp(5), firehol-mark(5), genl(8), ifconfig(8), ifrename(8), ifstat(8), iftab(5), ip-address(8), ip-addrlabel(8), ip-fou(8), ip-l2tp(8), ip-link(8), ipmaddr(8), ip-maddress(8), ip-monitor(8), ip-mroute(8), ip-neighbour(8), ip-netconf(8), ip-netns(8), ip-ntable(8), ip-route(8), ip-rule(8), ipsec_pluto(8), ipsec__stackmanager(8), ip-tcp_metrics(8), ip-token(8), iptunnel(8), ip-tunnel(8), iw(8), lnstat(8), miredo(8), nameif(8), netplugd(8), netstat(8), nft(8), route(8), routel(8), rtmon(8), rtpr(8), ss(8), sslsplit(1), tayga.conf(5), tc-bfifo(8), tc-pfifo_fast(8), vconfig(8), vpnc(8), wicd(8).

20 Dec 2011 iproute2 Linux