Tiny demo

$ ifconfig sm1
sm1: flags=8863<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        media: Ethernet 10baseT
        inet 0.0.0.0 netmask 0xff000000 broadcast 255.255.255.255
        inet6 fe80::200:86ff:fe05:80fa prefixlen 64 scopeid 0x01
        inet6 3ffe:501:4819:2000:200:86ff:fe05:80fa prefixlen 64
$ ifconfig lo0
lo0: flags=8009<UP,LOOPBACK,MULTICAST> mtu 32976
        inet 127.0.0.1 netmask 0xff000000 
        inet6 fe80::1 prefixlen 64 scopeid 0x02
        inet6 ::1 prefixlen 128
$ ping6 ::1
PING6(56=40+8+8 bytes) ::1 --> ::1
16 bytes from ::1, icmp_seq=0 hlim=64 time=0.137 ms
16 bytes from ::1, icmp_seq=1 hlim=64 time=0.112 ms
$ telnet localhost
Trying ::1...
Connected to localhost.
Escape character is '^]'.

FreeBSD (banana.kame.net) (ttyp8)

login: