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Date:      Thu, 10 Feb 2000 18:13:15 -0800
From:      Adam Wiggins <wiggins@treyarch.com>
To:        freebsd-questions@freebsd.org
Subject:   network stall
Message-ID:  <200002101813.SM00233@adam>

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Hi,

   I'm getting a very strange problem with my fresh install of 3.4.  I did
not get this with 2.2.7 and an almost identical configuration.

When someone connects to the machine, via ssh, telnet, http, or whatever,
everything works as expected - *unless* they get a chunk of data larger than
about 1K.  That is to say, you can log in, do "ls" and whatnot, but if you
bring up something that spits a lot of data to the screen (such as a man page,
cating a decently large file, or running pine) the connection appears to
lock on the
client side and no further output is visible.  The input is continuing to
run as normal.
(I tested this by typing 'echo > test.tmp' in a locked session.)

This does not happen when I connect from my internal LAN.  I tried
switching around
the ethernet cards, but the result was the same.  The outgoing connection
is DSL
if that makes any difference.

I plan to dive in and do some deeper testing (tcpdump logs, connecting my
Linux box
to the DSL to see if it's the line that is the problem), but in the
meantime I was wondering
if there are any known bugs with 3.4 that would cause a connection freeze
when packets
exceeding the MTU get sent to an internet host.  Or for that matter, if
someone can
suggest a good place to start in debugging this - I'm not knoweldgable
enough to
even really know where to begin.

Thanks!




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