Hi, I have two AYIYA tunnels that I use in case the other is down. I have a very simple setup, with a public IPv4 IP, no firewall on MacOSX. I use the stock AYIYA configuration and everything has worked fine with one POP (uschi02, which is down). The same setup with the Tunnel to my other POP (usqas01) does not seem to let any traffic flow, although the tunnel is created. I am stumped, because my setup has not changed and it works for one (when it is up) but not for the other. Any ideas on how to troubleshoot the problem would be appreciated. Thanks! I use Mac OS 10.6.2 and the TUN/TAP drivers. This is what I get: On the test everything works until this step: ###### [6/8] Ping the IPv6 Remote/PoP Inner Tunnel Endpoint (2001:4830:1600:20a::1) ### This confirms the reachability of the other side of the tunnel ### If it doesn't reply then check your interface and routing tables ### Don't forget to check your firewall of course ### If the previous test was succesful then this could be both ### a firewalling and a routing/interface problem PING6(56=40+8+8 bytes) 2001:4830:1600:20a::2 --> 2001:4830:1600:20a::1 Request timeout for icmp_seq=0 Request timeout for icmp_seq=1 Request timeout for icmp_seq=2 --- 2001:4830:1600:20a::1 ping6 statistics --- 3 packets transmitted, 0 packets received, 100.0% packet loss Aiccu Connection output: sock_getline() : "200 SixXS TIC Service on noc.sixxs.net ready (http://www.sixxs.net)" sock_printf() : "client TIC/draft-00 AICCU/2007.01.15-console-darwin Darwin/10.2.0" sock_getline() : "200 Client Identity accepted" sock_printf() : "get unixtime" sock_getline() : "200 1259090288" sock_printf() : "username JFB3-SIXXS" sock_getline() : "200 Choose your authentication challenge please" sock_printf() : "challenge md5" sock_getline() : "200 c96be115d643af82d162c718ab7b4b01" sock_printf() : "authenticate md5 0bf508b9ee43cda57baaddb0ae6bfd6e" sock_getline() : "200 Succesfully logged in using md5 as JFB3-SIXXS (Jose Fernando Barbe) from 2001:960:800::2" sock_printf() : "tunnel show T23740" sock_getline() : "201 Showing tunnel information for T23740" sock_getline() : "TunnelId: T23740" sock_getline() : "Type: ayiya" sock_getline() : "IPv6 Endpoint: 2001:4830:1600:20a::2" sock_getline() : "IPv6 POP: 2001:4830:1600:20a::1" sock_getline() : "IPv6 PrefixLength: 64" sock_getline() : "Tunnel MTU: 1280" sock_getline() : "Tunnel Name: My First Tunnel" sock_getline() : "POP Id: usqas01" sock_getline() : "IPv4 Endpoint: ayiya" sock_getline() : "IPv4 POP: 66.117.47.228" sock_getline() : "UserState: enabled" sock_getline() : "AdminState: enabled" sock_getline() : "Password: xxxxxxxxxxxx" sock_getline() : "Heartbeat_Interval: 60" sock_getline() : "202 Done" Succesfully retrieved tunnel information for T23740 sock_printf() : "QUIT Under the weeping moon" Tunnel Information for T23740: POP Id : usqas01 IPv6 Local : 2001:4830:1600:20a::2/64 IPv6 Remote : 2001:4830:1600:20a::1/64 Tunnel Type : ayiya Adminstate : enabled Userstate : enabled [tun-start] Trying Configured TUN/TAP interface tun0... [tun-start] Using TUN/TAP interface tun0 [tun-start] Setting TUNSIFHEAD for tun0 add net default: gateway 2001:4830:1600:20a::1 [AYIYA-start] : Anything in Anything (draft-02) [AYIYA-tun->tundev] : (Socket to TUN) started ifconfig: lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 inet 127.0.0.1 netmask 0xff000000 gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280 stf0: flags=1<UP> mtu 1280 en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 ether 00:26:4a:12:50:92 media: autoselect status: inactive supported media: none autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,flow-control> 10baseT/UTP <full-duplex,hw-loopback> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,flow-control> 100baseTX <full-duplex,hw-loopback> 1000baseT <full-duplex> 1000baseT <full-duplex,flow-control> 1000baseT <full-duplex,hw-loopback> en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 inet 128.101.33.38 netmask 0xffffff00 broadcast 128.101.33.255 ether 00:26:bb:05:3e:b2 media: autoselect status: active supported media: autoselect fw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 4078 lladdr 00:26:4a:ff:fe:12:50:92 media: autoselect <full-duplex> status: inactive supported media: autoselect <full-duplex> vmnet1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 inet 172.16.53.1 netmask 0xffffff00 broadcast 172.16.53.255 ether 00:50:56:c0:00:01 vmnet8: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 inet 192.168.202.1 netmask 0xffffff00 broadcast 192.168.202.255 ether 00:50:56:c0:00:08 tun0: flags=8851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST> mtu 1280 inet6 fe80::226:4aff:fe12:5092%tun0 prefixlen 64 scopeid 0x9 inet6 2001:4830:1600:20a::2 --> 2001:4830:1600:20a::1 prefixlen 128 open (pid 2344) Routing tables: Routing tables Internet: Destination Gateway Flags Refs Use Netif Expire default 128.101.33.254 UGSc 36 0 en1 127 127.0.0.1 UCS 0 0 lo0 127.0.0.1 127.0.0.1 UH 1 350 lo0 128.101.33/24 link#5 UCS 6 0 en1 128.101.33.5 0:22:41:f9:0:da UHLWI 0 1 en1 583 128.101.33.38 127.0.0.1 UHS 0 9 lo0 128.101.33.43 0:1b:63:5:54:d7 UHLWI 0 1 en1 198 128.101.33.56 0:1f:f3:ba:4b:c5 UHLWI 0 1 en1 820 128.101.33.63 0:1c:b3:b9:17:8d UHLWI 0 1 en1 852 128.101.33.254 0:13:72:3c:72:42 UHLWI 36 0 en1 137 128.101.33.255 ff:ff:ff:ff:ff:ff UHLWbI 0 6 en1 169.254 link#5 UCS 0 0 en1 172.16.53/24 link#7 UC 1 0 vmnet1 172.16.53.255 ff:ff:ff:ff:ff:ff UHLWbI 0 6 vmnet1 192.168.202 link#8 UC 1 0 vmnet8 192.168.202.255 ff:ff:ff:ff:ff:ff UHLWbI 0 6 vmnet8 Internet6: Destination Gateway Flags Netif Expire default 2001:4830:1600:20a::1 UGSc tun0 ::1 ::1 UH lo0 2001:4830:1600:20a::1 2001:4830:1600:20a::2 UH tun0 2001:4830:1600:20a::2 link#9 UHL lo0 fe80::%lo0/64 fe80::1%lo0 Uc lo0 fe80::1%lo0 link#1 UHL lo0 fe80::226:4aff:fe12:5092%tun0 link#9 UHL lo0 ff01::/32 ::1 Um lo0 ff02::/32 ::1 UmC lo0 ff02::/32 fe80::226:4aff:fe12:5092%tun0 UmC tun0