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Author Topic: Problem with ipv6 tunneling  (Read 3236 times)

lpetrov

  • Newbie
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  • Posts: 2
Problem with ipv6 tunneling
« 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 ?
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patrickdk

  • Jr. Member
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  • Posts: 67
Re: Problem with ipv6 tunneling
« Reply #1 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.
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lpetrov

  • Newbie
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  • Posts: 2
Re: Problem with ipv6 tunneling
« Reply #2 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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