Running a sles 11.2 xen 3.0.51-0.7.9 server with several xen VMs.

/var/log/messages spamming error:

kernel: [608030.834015] Attempting to checksum a non-TCP/UDP packet, dropping a protocol 1 packet

The server has also randomly crached/lost network a couple of times.

Im not finding any useful information on this on the internet. What might be the problem?

Im hoping to find a solution to the kernel-errors.. and then hope that it will solve the problem with the server hangs aswell.
Since logs dont say anything but the kernel-error above im clueless right now.

Thank you