A command is sent from the FIAC to {TAIL ~ the FIA} to identify received FCoE frames to replace the source and {HEAD ~ destination Ethernet MAC} addresses 
A command is sent from the FIAC to { TAIL ~ the FIA } to identify received FCoE frames to replace the source and { HEAD ~ destination Ethernet MAC } addresses
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH