On Oct 1, 2003, at 12:01 PM, Jeff Dubis wrote:
However I can't seem to get the tcp.options.xxxx parameters to work.
I tried:
Tethereal -o tcp.analyze_sequence_numbers:true -z proto,colinfo.tcp.options.sack,tcp.options.sack
But no luck.
Does your capture have any frames with selective acknowledgements in them? If not, you won't ever see tcp.options.sack in the Info column - it's a Boolean, but it's only put into the protocol tree if it's true.
(tcp.options.sack_perm won't work even if you *do* have frames with that option, as there's nothing in the TCP dissector that puts it into the protocol tree.)
