Format of Banyan VINES IPC port:
Offset	Size	Description	)
 00h	WORD	address family (always 0003h for Banyan ports)
 04h  4 BYTEs	network number (server's serial number)
 06h	WORD	subnet number  (0001h = server, 8000h-FFFEh = PC)
 08h	WORD	port ID (0001h-01FFh for "well-known" ports)
 0Ah	BYTE	hop count
 0Bh  5 BYTEs	filler
SeeAlso: #03333