My tunnel config eth0 Link encap:Ethernet HWaddr 00:11:D8:74:3F:88 inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.0.0.0 inet6 addr: 2001:6f8:369:1::2/64 Scope:Global inet6 addr: fe80::211:d8ff:fe74:3f88/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:53362 errors:0 dropped:0 overruns:0 frame:0 TX packets:51246 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:10348574 (9.8 MiB) TX bytes:41036820 (39.1 MiB) Interrupt:18 Base address:0x6000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:2135 errors:0 dropped:0 overruns:0 frame:0 TX packets:2135 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3146896 (3.0 MiB) TX bytes:3146896 (3.0 MiB) sixxs Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet6 addr: 2001:6f8:202:d5::2/64 Scope:Global inet6 addr: fe80::6f8:202:d5:2/64 Scope:Link UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1280 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) routing table : Kernel IPv6 routing table Destination Next Hop Flags Metric Ref Use Iface ::1/128 :: U 0 1 1 lo 2001:6f8:202:d5::/128 :: U 0 0 2 lo 2001:6f8:202:d5::2/128 :: U 0 0 1 lo 2001:6f8:202:d5::/64 :: U 256 1 0 sixxs 2001:6f8:369:1::/128 :: U 0 0 2 lo 2001:6f8:369:1::2/128 :: U 0 7 1 lo 2001:6f8:369:1::/64 :: U 256 0 0 eth0 fe80::/128 :: U 0 0 2 lo fe80::/128 :: U 0 0 2 lo fe80::211:d8ff:fe74:3f88/128 :: U 0 13 1 lo fe80::6f8:202:d5:2/128 :: U 0 0 1 lo fe80::/64 :: U 256 0 0 eth0 fe80::/64 :: U 256 0 0 sixxs ff00::/8 :: U 256 0 0 eth0 ff00::/8 :: U 256 0 0 sixxs ::/0 2001:6f8:202:d5::1 UG 1024 0 0 sixxs Now, My winxp client gets an ip from radvd. pinging a ipv6 host isn't the problem : Pinging sixxs.net [2001:838:1:1:210:dcff:fe20:7c7c] from 2001:6f8:369:1:250:8dff:fee5:1b3d with 32 bytes of data: Reply from 2001:838:1:1:210:dcff:fe20:7c7c: bytes=32 time=28ms Reply from 2001:838:1:1:210:dcff:fe20:7c7c: bytes=32 time=29ms Reply from 2001:838:1:1:210:dcff:fe20:7c7c: bytes=32 time=28ms Reply from 2001:838:1:1:210:dcff:fe20:7c7c: bytes=32 time=28ms Ping statistics for 2001:838:1:1:210:dcff:fe20:7c7c: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 28ms, Maximum = 29ms, Average = 28ms even a traceroute works. Tracing route to sixxs.net [2001:838:1:1:210:dcff:fe20:7c7c] from 2001:6f8:369:1:250:8dff:fee5:1b3d over a maximum of 30 hops: 1 <1 ms <1 ms <1 ms 001.crapiecorn.be [2001:6f8:369:1::2] 2 13 ms 13 ms 15 ms gw-214.bru-01.be.sixxs.net [2001:6f8:202:d5::1] 3 14 ms 14 ms 14 ms sixxs-gw.gdbru.be.easynet.net [2001:6f8:200:1003::1] 4 14 ms 15 ms 17 ms fe1-2-2-0.br2.gdbru.be.easynet.net [2001:6f8:200:6::6] 5 14 ms 13 ms 15 ms ge0-0-0-0.gr0.gdbru.be.easynet.net [2001:6f8:0:200::1] 6 21 ms 19 ms 19 ms so0-2-0-0.gr0.thlon.uk.easynet.net [2001:6f8::3:20:1] 7 21 ms 18 ms 19 ms ge0-2-0-0.br1.thlon.uk.easynet.net [2001:6f8:0:601::44:2] 8 20 ms 19 ms 19 ms 2001:6f8:605:3:212:1eff:fe24:f0db 9 21 ms 19 ms 21 ms 2001:7f8:4::cb9:1 10 18 ms 19 ms 20 ms realroot-gw.ip6.tiscali.net [2001:668:0:3::4000:32] 11 28 ms 27 ms 28 ms ge0-0-44.br0.nlams1.realroute.net [2001:1598:a:3::1] 12 25 ms 25 ms 26 ms ams-ix.ipv6.concepts.nl [2001:7f8:1::a501:2871:1] 13 28 ms 33 ms 30 ms se1.breda.ipv6.concepts-ict.net [2001:838:0:10::2] 14 27 ms 30 ms 26 ms noc.sixxs.net [2001:838:1:1:210:dcff:fe20:7c7c] Trace complete. But when I try to visted a ipv6 webpage or contact a newsserver the page stays blank (times out). I can't seem to find the problem. Greets Ruben. extra : subnet : 2001:6f8:369::/48 pop end : 2001:6f8:202:d5::1/64