Outgoing frames

Red Hat Enterprise Linux 8.6 LPAR mode z/VM guest

The qeth device driver registers the layer 3 card as an Ethernet device. Therefore, the Linux® TCP/IP stack will provide complete Ethernet frames to the device driver.

If the hardware does not require the Ethernet frame (for example, for IPv4) the driver removes the Ethernet header prior to sending the frame to the hardware. If necessary information like the Ethernet target address is not available (because of the offload functionality) the value is filled with the hardcoded address FAKELL.

Table 1. Ethernet addresses of outgoing frames
Frame	Destination address	Source address
IPv4	FAKELL	Real device address
IPv6	Real destination address	Real device address
Other packets	Real destination address	Real device address