Identify Network Interfaces on Linux
This article describes how to identify which network interfaces on a Linux®
server are associated with which Internet Protocol (IP) addresses.
IPv4
You can get a list of the network interfaces and IPv4 addresses on your server by
running the following command:
/sbin/ip -br a
The output lists the interface names on the left and the associated IP addresses on the right.
lo 127.0.0.1
eth0 68.207.142.192
eth1 10.173.3.121
IPv6
For IPv6, you can run a similar command but use "-6" in place of "-4":
/sbin/ip -br a
Here, too, the interface names are on the left, and the IP addresses are on the right.
lo ::1/128
eth0 2001:4801:7817:72:bc18:4779:ff10:1653
eth0 fe80::be76:4eff:fe10:1633
eth1 fe80::be76:4eff:fe10:12ab
Full output
To get all the information about your network interfaces in one place, run the following command:
/sbin/ip a
The detailed output lists each interface, any associated IP addresses, their network prefix
length, their scope, and many other details. For more information, check the
man
page for the ip
command by using the following command:
man ip
Updated 7 months ago