MTU/MRU, always-defrag, diald, masq not working for some URLs

Tom Oehser (tom@toms.net)
Sat, 26 Dec 1998 00:06:49 -0500 (EST)


re: Some URLs fail through masquerading

> Another thing, more nebulous, that can cause this is the use of a
> setting other then "1500" for your MTU size in your PPP configuration.
> I recommend that if you have already turned on CONFIG_IP_ALWAYS_DEFRAG,
> that you further go ahead and try adding "mtu 1500" to your pppd options
> list, and see if that has any effect. Many people find that it does.

I have the defrag on already.

The mtu/mru 1500 causes the problem to go away.

Given that this is a bad wrong problematic kludge, where should I be
looking to fix this *without* changing my mtu/mru from 296 to 1500?

Is there a problem with the defrag, where an interaction with diald
between the sl0 and ppp0 causes the always-defrag to not defrag?

Changing my MTU/MRU from 296 to 1500 causes many other problems, I have to
find another approach to this...

-Tom

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