In article <47671AF1.3010201@flame.org>, M Graff  <explorer@flame.org> wrote:
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>This has started happening both in a -current to -current setup, and
>between a 4.0 BETA 2 box to whatever cvs.netbsd.org is running.
>
>There seems to be no common reason for this; I've had it happen when
>ssh'ing locally to a box on the same wire as me, and when ssh'ing over a
> IP tunnel which is probably making packets fragment.
>
>netsat -s reports no packets with bad checksums in any protocol, and
>nothing else that jumps out at me as a potential cause.
>
>Until today, every time this occurred it was between a machines I own on
>both sides.  Today, it happened with the sshd that comes from the
>4.0_BETA2 install I made (and did not compile myself) and cvs.netbsd.org.
>

I've seen that with IPSEC tunnels...  Are you running over an IPSEC tunnel?

christos