tcpdump(1) has changed its output format since version 3.7.4,
so ports/net/tcpshow cannot parse it since then.
PR: ports/113620
Submitted by: Eugene Grosbein <eugen@grosbein.pp.ru>
proto 94 (IPIP). I've been using this patch for a few weeks now for
tracking down various "things" involving some IP tunnels between some
Cisco 1720/2610 routers and several FreeBSD machines.
Submitted by: Mike Nowlin <mike@argos.org>