[takeshi@fedora ~]$ ifconfig eth0 eth0 Link encap:Ethernet HWaddr *:*:*:B3:F3:13 inet addr:192.168.1.225 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: 2400:*:*:*:*:*ff:feb3:f313/64 Scope:Global ...
(某IPv6対応VPS上で) [takeshi@dti-vps-srv* ~]$ ping6 2400:*:*:*:*:*ff:feb3:f313 PING 2400:*:*:*:*:*ff:feb3:f313(2400:*:*:*:*:*ff:feb3:f313) 56 data bytes 64 bytes from 2400:*:*:*:*:*ff:feb3:f313: icmp_seq=0 ttl=53 time=10.9 ms 64 bytes from 2400:*:*:*:*:*ff:feb3:f313: icmp_seq=1 ttl=53 time=13.9 ms 64 bytes from 2400:*:*:*:*:*ff:feb3:f313: icmp_seq=2 ttl=53 time=13.9 ms
まぁ、テキストのコピペならいかようにも偽造可能ではありますけれども。