tcpdump and NetRAIN ?

From: Blichfeldt, Bjarne <Bjarne.Blichfeldt_at_COMPAQ.COM>
Date: Thu, 03 Jan 2002 14:03:42 +0000

I am trying to use tcpdump on a TRU64 4.0F with netRAIN interface, but whitout luck.

ifconfig -a when tcpdump is started on any interface, shows the relevant
interfaceoption is set to PROMISC,COPYALL

tcpdump -i lo0 works fine

tcpdump -i nr0
tcpdump: Using kernel BPF filter
tcpdump: listening on nr0
 then nothing happens

tcpdump -i tu0 returns nothing
tcpdump: WARNING: tu0: no IPV4 address assigned
tcpdump: Using kernel BPF filter
tcpdump: listening on tu0
  Then nothing happens

tcpdump -i tu1
tcpdump: WARNING: tu1: no IPV4 address assigned
tcpdump: Using kernel BPF filter
tcpdump: listening on nr0
  shows NetRAIN test packet.

ifconfig -a shows that the active interface is tu0

tcpdump is version 3.6

Since I am able to catch packets on the local interface and to some extent on tu1, I
think tracing does work, only not on the active interface.

Good ideas is most welcome

Regards,
Bjarne Blichfeldt
Received on Thu Jan 03 2002 - 14:05:38 NZDT

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