Hello, today I've a very similar problem (since today) like ticket SIXXS #5873894: I cannot reach the PoP endpoint ( 2001:6f8:1c00:4a::1 ) of my tunnel (T22071) whereas I can ping my own end of the tunnel locally. Here are some informations: Tunnel Information for T22071: POP Id : deham02 IPv6 Local : 2001:6f8:1c00:4a::2/64 IPv6 Remote : 2001:6f8:1c00:4a::1/64 Tunnel Type : ayiya Adminstate : enabled Userstate : enabled Nov 23 17:08:59 pc01 aiccu[2477]: sock_getline() : "200 SixXS TIC Service on nlams04.sixxs.net ready (http://www.sixxs.net)" Nov 23 17:08:59 pc01 aiccu[2477]: sock_printf() : "client TIC/draft-00 AICCU/2007.01.15-console-linux Linux/3.0.0-13-generic-pae" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "200 Client Identity accepted" Nov 23 17:09:00 pc01 aiccu[2477]: sock_printf() : "get unixtime" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "200 1322064540" Nov 23 17:09:00 pc01 aiccu[2477]: sock_printf() : "starttls" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "400 This service is not SSL enabled (yet)" Nov 23 17:09:00 pc01 aiccu[2477]: TIC Server does not support TLS but TLS is not required, continuing Nov 23 17:09:00 pc01 aiccu[2477]: sock_printf() : "username CMV3-SIXXS" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "200 CMV3-SIXXS choose your authentication challenge please" Nov 23 17:09:00 pc01 aiccu[2477]: sock_printf() : "challenge md5" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "200 <****>" Nov 23 17:09:00 pc01 aiccu[2477]: sock_printf() : "authenticate md5 <***>" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "200 Successfully logged in using md5 as CMV3-SIXXS (Christopher Michl)" Nov 23 17:09:00 pc01 aiccu[2477]: sock_printf() : "tunnel show T22071" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "201 Showing tunnel information for T22071" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "TunnelId: T22071" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "Type: ayiya" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "IPv6 Endpoint: 2001:6f8:1c00:4a::2" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "IPv6 POP: 2001:6f8:1c00:4a::1" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "IPv6 PrefixLength: 64" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "Tunnel MTU: 1280" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "Tunnel Name: IPv6Tunnelcm01" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "POP Id: deham02" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "IPv4 Endpoint: ayiya" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "IPv4 POP: 212.224.0.189" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "UserState: enabled" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "AdminState: enabled" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "Password: <*****>" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "Heartbeat_Interval: 60" Nov 23 17:09:00 pc01 aiccu[2477]: sock_getline() : "202 Done" Nov 23 17:09:00 pc01 aiccu[2477]: Successfully retrieved tunnel information for T22071 Nov 23 17:09:00 pc01 aiccu[2477]: sock_printf() : "QUIT Ajuuu paraplu" Nov 23 17:09:00 pc01 aiccu[2482]: AICCU running as PID 2482 Nov 23 17:09:00 pc01 aiccu[2482]: [AYIYA-start] : Anything in Anything (draft-02) Nov 23 17:09:00 pc01 aiccu[2482]: [AYIYA-tun->tundev] : (Socket to TUN) started ip -6 ro show 2001:6f8:1c00:4a::/64 dev sixxs proto kernel metric 256 2001:6f8:1c29::/64 dev br0 proto kernel metric 256 fe80::/64 dev br0 proto kernel metric 256 fe80::/64 dev eth1 proto kernel metric 256 fe80::/64 dev wlan0 proto kernel metric 256 fe80::/64 dev sixxs proto kernel metric 256 default via 2001:6f8:1c00:4a::1 dev sixxs metric 1024 uname -a Linux router01 3.0.0-13-generic-pae #22-Ubuntu SMP Wed Nov 2 15:17:35 UTC 2011 i686 i686 i386 GNU/Linux The AICCU Quick Connectivity Test is close to SIXXS #5873894 Best regards Chris