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Hurricane Electric's IPv6 Tunnel Broker Forums

Tunnelbroker.net Specific Topics => Questions & Answers => Topic started by: lpetrov on July 13, 2010, 07:37:15 PM

Title: Problem with ipv6 tunneling
Post by: lpetrov on July 13, 2010, 07:37:15 PM
Few days ago i'd setuped ipv6 tunnel that was working just perfect. Since today the tunneling is not working, for example:

root@reborn:~# tracepath6 2001:470:1f0a:XXX::1
1?: [LOCALHOST]                      pmtu 1480
1:  send failed
1:  send failed
     Resume: pmtu 1480

I've no access to the gateway, any ideas what is the problem or how can i debug it ?
Title: Re: Problem with ipv6 tunneling
Post by: patrickdk on July 13, 2010, 07:41:53 PM
send failed, means that linux can't get the packet to leave the computer.

Normally it happens due to a firewall on the machine, lack of configuring an ip, or missing routes.
Title: Re: Problem with ipv6 tunneling
Post by: lpetrov on July 13, 2010, 07:51:55 PM
argh... seems that somehow ufw (ubuntu firewall) was blocking IPv6.
now fixed, sorry bothering :)
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