Bug#503020: linux-image: tcp_dsack causes hangs when using proxy server

[Steve Langasek <vorlon@debian.org>]

On Tue, Oct 21, 2008 at 04:09:43PM -0400, Jonathan Zdziarski wrote:
> Package: linux-image
> Severity: normal

> net.ipv4.tcp_dsack is enabled by default, and for some reason causes certain
> websites to hang when downloading web pages through a proxy. For example:

> curl -x [my proxy] http://www.zdziarski.com

> causes the web page to hang every other query. disabling net.ipv4.tcp_dsack
> seems to resolve the problem, leaving me to believe something might be wrong
> in how linux handles dupe sacks.

This is probably <http://bugzilla.kernel.org/show_bug.cgi?id=11721>.

-- 
Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek@ubuntu.com                                     vorlon@debian.org