Required options for using dhcpcd with layer3
You must configure the DHCP client program dhclient to use it
on Linux® on IBM® Z with layer3.
- Run the DHCP client with an option that instructs the DHCP server
to broadcast its response to the client.
Because the OSA-Express adapter in QDIO mode forwards packets to Linux based on IP addresses, a DHCP client that requests an IP address cannot receive the response from the DHCP server without this option.
- Run the DHCP client with an option that specifies the client identifier
string.
By default, the client uses the MAC address of the network interface. Hence, without this option, all Linux instances that share the OSA-Express adapter in QDIO mode would also have the same client identifier.
See the documentation for dhcpcd about
selecting these options.
You need no special options for the
DHCP server program, dhcp.