[Fedora-xen] 2.6.19-1.2911.6.5 and tg3 failing?

[Paul Wouters]

Hi guys,

I have a strange xen problem where the xen server is using the tg3 ethernet
driver. The dom0 can ping the guest, but the guest cannot ping the dom0.
tcpdump on the dom0 shows that the icmp arrives on its eth0, but it doesnt
send the icmp reply. Pinging the default gw in the physical network from
the guest works, and the guest has full connectivity to the world, with the
exception of the dom0.

There are no firewall rules in place.

I tried the following to no effect:

 ethtool -K eth0 tso off
 ethtool -K eth0 tx off

Does anyone have an idea? This is running xen-3.0.3-8.fc6 and
kernel-xen-2.6.19-1.2911.6.5.fc6 on guest and dom0.

Paul