Messages in this thread | | | From | (Alan Cox) | Subject | Re: ppp mru/mtu and ip masquerading | Date | Sun, 28 Feb 1999 17:43:01 +0000 (GMT) |
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> David Miller asked me for some tcpdumps when I first reported it on > linux-kernel over a year ago, which I sent, but he was unable to find the > source of the problem. Toggling ip_no_pmtu_disc has no effect. Sort of > embarrassing that Linux networking has held this bug for so long.
The Linux networking traces I've seen with MTU discovery all show it working correctly and faults at remote sites. I have yet to see a single case where the problem is the Linux end with 2.0.x
With 2.2.x it is entirely possible given the changes to the masquerading code that a bug has crept in. But I've yet to see a trace for that and it would be suprising
(If you think about it masquerading doesnt kick in on a download problem error case. The errored tcp frame bounces off the start of the low MTU PPP link before it is masqueraded)
Alan
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