I can not ping my ipv6 address. I have setup ipv6, enable in kernel and it works, i can ping - ping6 -c 3 noc.sixxs.net PING6(56=40+8+8 bytes) 2001:15c0:65ff:4::2 --> 2001:838:1:1:210:dcff:fe20:7c7c 16 bytes from 2001:838:1:1:210:dcff:fe20:7c7c, icmp_seq=0 hlim=56 time=722.089 ms 16 bytes from 2001:838:1:1:210:dcff:fe20:7c7c, icmp_seq=1 hlim=56 time=293.959 ms 16 bytes from 2001:838:1:1:210:dcff:fe20:7c7c, icmp_seq=2 hlim=56 time=395.466 ms --- noc.sixxs.net ping6 statistics --- 3 packets transmitted, 3 packets received, 0.0% packet loss round-trip min/avg/max/std-dev = 293.959/470.505/722.089/182.660 ms - but i cannot be pinged. Is this firewall problem? If so, which port shuld be open? I have PF, under freebsd. here is report of pinging me - 64 bytes from 2001:15c0:65ff:4::2: icmp_seq=544 ttl=60 time=565 ms 64 bytes from 2001:15c0:65ff:4::2: icmp_seq=545 ttl=60 time=220 ms From 2001:15c0:ffff:7::2 icmp_seq=546 Destination unreachable: Address unreachable From 2001:15c0:ffff:7::2 icmp_seq=547 Destination unreachable: Address unreachable --- 2001:15c0:65ff:4::2 ping statistics --- 587 packets transmitted, 103 received, +42 errors, 82% packet loss, time 587336ms rtt min/avg/max/mdev = 220.437/652.188/1217.733/191.304 ms, pipe 2 - Can anyone explain this? Thanks p.s. I hope this isn`t OT.