tcpdump setup help

Scott Tyson
Tue Nov 23 13:14:13 1999

I'd like to monitor my nic with tcpdump but I'm unclear on how to have
it log only errors.  I read the man page and I'm unclear as to a way for
tcpdump to spit out just errors.  I guess I could pipe it though grep
but what strings would I look for to kick the errors to a file?  I ran
it for a while with all packets going to a file but it got big in a

All help is appreciated.