How do I display ipv6 addresses on linux using the ip command?

indigowinged

$ ip -6 addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 state UNKNOWN qlen 1000
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9001 state UP qlen 1000
    inet6 xxxx:xxxx:xxx:xxxx:xxxx:xxxx:xxxx:xxxx/128 scope global dynamic noprefixroute
       valid_lft 417sec preferred_lft 117sec
    inet6 fe80::486:35ff:fe8c:73d2/64 scope link noprefixroute
       valid_lft forever preferred_lft forever

The ifconfig command can display them also, however see note in ifconfig man page.

NOTE
This program is obsolete! For replacement check ip addr and ip link.
For statistics use ip -s link.

$ ifconfig | grep inet6