[Fedora-xen] TCP checksum corruption

[Mike McGrath <mmcgrath redhat com>]

We're using xen heavily in Fedora's Infrastructure and presently a 
number of the xen domU hosts are experiencing terrible checksum issues.  
I've tried the ethtool -K eth0 tx off fix and it didn't work.

dom0:  2.6.19-1.2911.fc6xen x86_64
domU: 2.6.20-1.2933.fc6xen x86_64

Anyone have any ideas?

   -Mike