[Planetlab-users] (no subject)

[Benjamin Zahler]

Hi all,
I'm having trouble installing tcpdump / plabdump on my slice.

First to tcpdump: I did run "yum install tcpdump" which told me that 
tcpdump is installed and up to date.

Now running
/usr/sbin/tcpdump -F dump.out as root yields the following result:

Couldn't find user 'pcap'

I have also intalled libpcap,and I've tried a workaraound I've found 
for this exact problem in the archives:
/usr/sbin/groupadd -g 77 pcap  2> /dev/null
/usr/sbin/useradd -u 77 -g 77 -s /sbin/nologin -M -r \ -d /var/arpwatch 
pcap 2> /dev/null \ || /usr/bin/chsh pcap /sbin/nologin 2> /dev/null

but it did not help. Any ideas how I can get this to work?

So, I tried to use plabdump, I downloaded the tarball, installed it and 
everything seemed to go smooth, but when I run it, I get:

plabdump tcp port 3001
sniffdump: sniffdump.c:76: main: Assertion `tmp == 1' failed.
tcpdump: bad dump file format
Abort


Has anybody heard of that before?

thanks a lot for your help!

Ben