Thank you! ICMP filtering was the problem.
On Thu, 19 Oct 2000, Hauke Johannknecht wrote:
> On Thu, 19 Oct 2000, Cheng-Jih Chen wrote:
> > Thanks. The smaller MTU seems to work. At least somewhat: the linux
> aehm, lowering the MTU should be considered a part of debugging,
> not of the solution.
> > Oh, I have ip_always_defrag set, but I'm not masquerading, so it shouldn't
> > have any affect.
> well. it could even worsen the situation.
> you should check if you filter ICMP somewhere. most MTU-problems
> are caused this way. filtering ICMP breaks PMTU-discovery.
> so you should disable PMTU-Disc or let the ICMP-frag-needed pass.
> Hauke Johannknecht Berlin / Germany HJ422-RIPE
> Use PGP ! -> lynx -dump http://www.ash.de/ash.asc | pgp -kaf
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