$ ping6 -Ieth0 ff02::1
PING ff02::1(ff02::1) from fe80::21b:fcff:fedb:2ad6 eth0: 56 data bytes
64 bytes from fe80::21b:fcff:fedb:2ad6: icmp_seq=1 ttl=64 time=0.020 ms
64 bytes from fe80::d0fc:5fff:fe66:8496: icmp_seq=1 ttl=64 time=1.74 ms (DUP!)
64 bytes from fe80::2e0:4dff:fe39:fc34: icmp_seq=1 ttl=64 time=6.24 ms (DUP!)
64 bytes from fe80::a00:28ff:fefa:479c: icmp_seq=1 ttl=64 time=207 ms (DUP!)