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On Tue, May 05, 2020 at 08:47:04PM +0200, Francois-Xavier Le Bail wrote:
> > So, given that the first 16 bits are "4 bit always 0, and 12 bits
> > reserved-must-be-set-to-0", using these as heuristics for "if two 0-bytes
> > are following the MPLS headers, it's a control word, so we skip 4 bytes
> > and the rest is a regular Ethernet packet" should work.
> We should print "PW Ethernet Control Word" and the "Sequence Number", 2 last 
> 2 octets of the 4.
> Like:
> PW Ethernet Control Word, Sequence Number xxx

I think we should only print this if "-v" is given.  Most of the time, 
both control word and sequence number are of little interest.

I really like tcpdump's very compact "only the most relevant info" output
format (by default).

"If was one thing all people took for granted, was conviction that if you 
 feed honest figures into a computer, honest figures come out. Never doubted 
 it myself till I met a computer with a sense of humor."
                             Robert A. Heinlein, The Moon is a Harsh Mistress

Gert Doering - Munich, Germany                             g...@greenie.muc.de

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