On 2015/12/15 14:18, lloyd.wood@xxxxxxxxxxx wrote: > Important NewsFlash! > > IP travels over things that aren't Ethernet, or don'thave Ethernet EtherTypes! Are you saying that some datalink protocol relies on IP version field to demultiplex IPv4 and IPv6, even though the protocol must have some field to demultiplex IP and non-IP? For example? IP travels over things over which non-IP packets also travel. Masataka Ohta