The documentation is pretty thin, but looking at the source of NetPacket::TCP, I think you need to call my %opts = $tcp_obj->parse_tcp_options; and then access $opts{mss}. (untested)

I've attempted to work with libpcap in the past myself, using both Perl and Java. Several times I've come away with an icky feeling. That leads me to ask: why do you want to do this with Perl, and not with tshark?

In reply to Re: filter tcpdump packets by Anonymous Monk
in thread filter tcpdump packets by syboar

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