client keepalive on high trafic site

[Václav Bílek]

> 
>> If it is too much for that, one dirty workaround is to define
>> yourself as a backend, and send all IE6 to pass with yourself
>> as backend, that way you get a cache-hit, but can use vcl_fetch
>> on the pass transaction to nuke the connection closed header.

Pass for IE6 did not solve the problem, I had to pipe it which means its
 uncachable :(

are there any workarounds or tweaks for IE in Varnish? ... for example
when IE asks for something by http1.1 protokol why is the answer in http
1.0 ? Is there any way how to force response to be the same protocol
version?

Vaclav Bilek