>> ping6 2001:001b:a9be:c6a6:34e5:8361:c07f:a990 ---8<--- $> ping6 2001:001b:a9be:c6a6:34e5:8361:c07f:a990 PING 2001:001b:a9be:c6a6:34e5:8361:c07f:a990(2001:1b:a9be:c6a6:34e5:8361:c07f:a990) 56 data bytes ^C --- 2001:001b:a9be:c6a6:34e5:8361:c07f:a990 ping statistics --- 11 packets transmitted, 0 received, 100% packet loss, time 10079ms --->8--- >> >> Is the state then I1_SENT? ---8<--- $> hipconf get ha all Sending user message 22 to HIPD on socket 3 Sent 40 bytes Waiting to receive daemon info. 216 bytes received from HIP daemon HA is ESTABLISHED Local HIT: 2001:0018:2229:4815:dd66:c380:e0c7:2a71 Peer HIT: 2001:001b:a9be:c6a6:34e5:8361:c07f:a990 Local LSI: 1.0.0.1 Peer LSI: 1.0.0.2 Local IP: 192.168.1.2 Local NAT traversal UDP port: 50500 Peer IP: 193.167.187.134 Peer NAT traversal UDP port: 50500 Peer hostname: crossroads.infrahip.net --->8--- >> >> Can you also copy paste output of: >> >> tcpdump -n -i any port 50500 or proto 139 or esp ---8<--- sudo tcpdump -n -i any port 50500 or proto 139 or esp tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on any, link-type LINUX_SLL (Linux cooked), capture size 96 bytes 21:01:08.166459 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 44 21:01:08.166479 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 44 21:01:08.495036 IP 193.167.187.134.50500 > 192.168.1.2.50500: UDP, length 668 21:01:08.653581 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 636 21:01:08.653602 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 636 21:01:09.011610 IP 193.167.187.134.50500 > 192.168.1.2.50500: UDP, length 244 21:01:09.696582 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 116 21:01:09.696607 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 116 21:01:09.922207 IP 193.167.187.134.50500 > 192.168.1.2.50500: UDP, length 116 21:01:10.704649 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 116 21:01:10.704676 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 116 21:01:10.930596 IP 193.167.187.134.50500 > 192.168.1.2.50500: UDP, length 116 21:01:11.713648 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 116 21:01:11.713673 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 116 21:01:11.939719 IP 193.167.187.134.50500 > 192.168.1.2.50500: UDP, length 116 21:01:12.720534 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 116 21:01:12.720556 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 116 21:01:12.946564 IP 193.167.187.134.50500 > 192.168.1.2.50500: UDP, length 116 21:01:13.728570 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 116 21:01:13.728595 IP 192.168.1.2.50500 > 193.167.187.134.50500: UDP, length 116 21:01:13.954634 IP 193.167.187.134.50500 > 192.168.1.2.50500: UDP, length 116 --->8--- Looks like the IPv6 interface of crossroads is disabled. I tried ping6 of crossroads.infrahip.net, but does not work. IPv4 ping works. I checked opening crossroads in browser now, but still does not work -- Sateesh