Can you reproduce on the latest kernel, please?
Is the OpenBSD mangling the packet in any way?
Can anyone tell me if this smells like something
recently fixed (MTU issues)? Doesn't sound like
the windowscaling problem but could be related.
-------- Original Message --------
Subject: [Bug 3397] New: Network connections hang going through an
Date: Tue, 14 Sep 2004 09:38:24 -0700
Summary: Network connections hang going through an OpenBSD
Kernel Version: 2.6.6+
Distribution: Fedora Core 2, Gentoo
Hardware Environment: All
Software Environment: All
We have seen a number of issues with people accessing our website
http://www.cs.unm.edu/ using kernels 2.6.6+. Doing some network sniffing
see that data request is received by the web server and the web server
however after certain amount of bytes it simply stops.
I have played with MTU sizes and if Ethereal is to be believed the transfer
stops after MTU + 77 bytes.
This has been reported to us by a number of different people running
distributions ie. Fedora Core 2, Gentoo. For example 2.6.5 kernel that comes
with FC2 works. Secure IMAP and Secure POP don't seem to work either
What is even stranger is that SSH connections don't exhibit this kind of a
problem ie. you can SSH withouth a hitch.
A data point is that we are using transparent (in-line) OpenBSD firewall
Steps to reproduce:
Boot into 2.6.6+ kernel try pulling up http://www.cs.unm.edu/ through a web
browser. It won't show up. Boot into a 2.6.5 and below and the page will
Any clues will be appreciated.
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