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Author Topic: a problem communicating with ipv6.he.net  (Read 10782 times)

wamble

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  • Posts: 11
Re: a problem communicating with ipv6.he.net
« Reply #15 on: September 21, 2010, 03:59:28 PM »

Shouldn't have had to touch eth0, just the tunnel interface.

Ok, I'll double check this tonight.
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wamble

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Re: a problem communicating with ipv6.he.net
« Reply #16 on: September 26, 2010, 06:44:22 PM »

Shouldn't have had to touch eth0, just the tunnel interface.

Ok, I'll double check this tonight.


I just realised that I hadn't indicated what I found... Alex is right - only the tunnel interface needs the MTU changed. I'm not sure what was going on when I first tried this, but I reset eth0 and all is fine.
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webmany

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Re: a problem communicating with ipv6.he.net
« Reply #17 on: September 26, 2010, 07:33:30 PM »

Is there a firewall blocking icmp (fragmentation needed, which is needed by pmtu) on he.net?
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snarked

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Re: a problem communicating with ipv6.he.net
« Reply #18 on: September 28, 2010, 11:47:36 AM »

No.  However, remember that ICMPv6 uses a different protocol code than IPv4 ICMP.
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