I would like to trace packets at the PPP interface.
I've played around with tcpdump and am unable to get it to watch
the ppp0 interface ("tcpdump: snoop: unknown physical layer type").
Yes, I know that I can bump the debug level (-d #) on the pppd
daemon and see all kinds of traffic, but I like the
filtering/expression capabilities of tcpdump.
Am I brain-dead [whoa!..you answered way too fast :) ], or is
there another utility that will do the job? If not, I guess I'll
just use the pppd debug capability and run it through some sort