From owner-freebsd-current@FreeBSD.ORG  Thu Apr 19 08:43:16 2007
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Date: Thu, 19 Apr 2007 11:43:05 +0300
From: Krassimir Slavchev <krassi@bulinfo.net>
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Subject: network problems?
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Hello,

The problem is when I try to access ftp servers, the connection stalls 
randomly. Also I can't do cvsup and fetch.
This happens only with machines running -current and when the traffic is 
passed through router based on FreeBSD 4.4. One of the test machines is 
my notebook which have installed 7.0-CURRENT (from today) and 5.4-STABLE 
and I see this problem only with -current.

Is there any new features in -current tcp stack which may be 
incompatible with FreeBSD 4.x?

Best Regards