A couple of weeks ago, I noticed my home network had lost v6 connectivity, so I checked the Sixxs website and saw that usqas01 was marked down. The next day, I noticed the PoP was no longer marked down, so I attempted to restart my AICCU client to re-establish the tunnel. The tunnel would not re-establish, not has it since with multiple attempts. Here are the details: When I attempt to restart AICCU, this is all that gets logged, even with 'verbose true' set: Aug 8 10:44:29 skorpion sixxs-aiccu: Couldn't connect to the TIC server usqas01.sixxs.net Aug 8 10:44:29 skorpion sixxs-aiccu: Couldn't retrieve first tunnel for the above reason, aborting I am able to ping the v4 address of the PoP, but manual attempts to telnet to 3874/tcp return a 'connection refused' error. This is my aiccu.conf file: username GNI1-SIXXS password *************** protocol tic server usqas01.sixxs.net ipv6_interface gif0 tunnel_id T25390 verbose true daemonize true automatic true requiretls true My tunnel end runs FreeBSD v9.2-RELEASE-p8 & the official sixxs-aiccu-20070115_4 port. This host is directly connected to the internet and has a publicly routable IP address.: FreeBSD skorpion.citadel.trioptimum.com 9.2-RELEASE-p8 FreeBSD 9.2-RELEASE-p8 #1: Thu Jun 5 13:11:46 EDT 2014 root@skorpion.citadel.trioptimum.com:/usr/obj/usr/src/sys/skorpion i386 A tcpdump capture of a connect attempt is accessible here: http://trioptimum.com/~gneff/.files/sixxs.cap I am not a new Sixxs user and have used this and other tunnels for years. Thank you for any assistance you can offer.