Subject: Re: bad tcp sums
To: Martin Husemann <email@example.com>
From: None <firstname.lastname@example.org>
Date: 04/15/2001 11:17:46
>I have a problem connecting to a pop3 server when connected over PPPoE
>(MTU 1492), while everything works using an ISDN connection (MTU 1500).
>I get bad tcp cksums for fragmented packets.
do you have control over the pop server? if so, try taking tcpdump
on both sides and compare the outputs. i guess there's a intermediate
device (NAT router?) which is damaging packets.