qeth.e73874 <bus ID of the qeth device>: Starting ARP processing support for <network interface name> failed
Explanation
The qeth device driver could not start ARP support on the network adapter.
User response
Ungroup and regroup the subchannel triplet of the device. If this does not
resolve the problem, reboot Linux. If the problem persists, gather Linux
debug data and report the problem to your support organization.