Raspberry Pi/IPv6

~# ip addr
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    inet6 2601:681:aaaa:817:aaaa:79bf:aaaa:8480/64 scope global mngtmpaddr noprefixroute dynamic
       valid_lft 213326sec preferred_lft 213326sec