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a problem communicating with ipv6.he.net

Started by wamble, September 16, 2010, 01:07:56 AM

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wamble

#15
September 21, 2010, 03:59:28 PM
Quote from: broquea on September 21, 2010, 08:01:21 AM
Shouldn't have had to touch eth0, just the tunnel interface.

Ok, I'll double check this tonight.

wamble

#16
September 26, 2010, 06:44:22 PM
Quote from: wamble on September 21, 2010, 03:59:28 PM
Quote from: broquea on September 21, 2010, 08:01:21 AM
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.

webmany

#17
September 26, 2010, 07:33:30 PM
Is there a firewall blocking icmp (fragmentation needed, which is needed by pmtu) on he.net?

snarked

#18
September 28, 2010, 11:47:36 AM
No.  However, remember that ICMPv6 uses a different protocol code than IPv4 ICMP.
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