On Dec 2, 2017, at 4:06 AM, Anton Glukhov <anton.a.gluk...@gmail.com> wrote:

> You are right, “express" packet is exactly the same as “ordinary”. From my 
> point of view it’s ok to show express traffic as part of preemption traffic, 
> hence I’d like to see Express packets in favour of “ordinary” one. Anyway I 
> guess If we choose specific link type for 802.1qbu & 802.1br it would be the 
> “context” in which “ordinary” traffic is called “express” packets.

OK, so we'll have LINKTYPE_ETHERNET_MPACKET/DLT_ETHERNET_MPACKET, specified as:

        mPackets, as specified by IEEE 802.3br Figure 99-4, starting with the 
preamble and always ending with a CRC field

Does that make sense?
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