I've recently had a couple of people report that they can't reach my website without very long (5 minutes) delays between the request and the data arriving. On inspection, this turns out to be because they're using IPv6, and things are going missing somewhere. My v6 configuration: hrm@frost:~$ sudo ifconfig eth0 Link encap:Ethernet HWaddr 00:16:3e:14:ae:f9 inet addr:212.13.194.111 Bcast:212.13.194.255 Mask:255.255.255.0 inet6 addr: 2001:ba8:1f1:f1d9:216:3eff:fe14:aef9/64 Scope:Global inet6 addr: fe80::216:3eff:fe14:aef9/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1821029 errors:0 dropped:0 overruns:0 frame:0 TX packets:1938563 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:271575802 (258.9 MiB) TX bytes:999222239 (952.9 MiB) Interrupt:8 hrm@frost:~$ sudo route -6 Kernel IPv6 routing table Destination Next Hop Flag Met Ref Use If 2001:ba8:1f1:f1d9::/64 :: UAe 256 0 2567 eth0 fe80::/64 :: U 256 0 0 eth0 ::/0 fe80::fcff:ffff:feff:ffff UGDAe 1024 0 774 eth0 ::/0 :: !n -1 1 3376 lo ::1/128 :: Un 0 1 58520 lo 2001:ba8:1f1:f1d9:216:3eff:fe14:aef9/128 :: Un 0 1 0 lo fe80::216:3eff:fe14:aef9/128 :: Un 0 1 624 lo ff00::/8 :: U 256 0 0 eth0 ::/0 :: !n -1 1 3376 lo From the looks of this, it's routing stuff to the internet via something related to my link local address, which seems wrong to me. However, I'm no IPv6 expert... Am I reading it right? I'm using autoconfiguration (and would prefer to continue doing so, if possible). Is this some misconfiguration on my end that I should be fixing, or should I be raising a support ticket? Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- A cross? Oy vey, have you picked the wrong vampire! ---