Dirk: could you post the config (differences) for those two kernels. Maybe we are missing a module or like suggested above, maybe an iptable or similar configuration is broken with either the kernel or a xen setting that relies on something in the kernel.
Dirk: could you post the config (differences) for those two kernels. Maybe we are missing a module or like suggested above, maybe an iptable or similar configuration is broken with either the kernel or a xen setting that relies on something in the kernel.