IP addresses

Red Hat Enterprise Linux 8.6 LPAR mode z/VM guest

The network stack of each operating system that shares an OSA-Express adapter in QDIO mode registers all its IP addresses with the adapter.

Whenever IP addresses are deleted from or added to a network stack, the device drivers download the resulting IP address list changes to the OSA-Express adapter.

For the registered IP addresses, the OSA-Express adapter off-loads various functions, in particular also:
  • Handling MAC addresses and MAC headers
  • ARP processing