Ethereal when built on 6.1 hangs in recvfrom() - the same code compiled on 6.0 (or even 5.2) works fine on 6.1.
libpcap seems to be broken in general, and the SRPM is missing from ftp.redhat.com, so I was unable to see what broke. It worked in 6.0, and then suddenly in 6.1 it's not picking up packets as they come across the wire (ie it blocks forever as if there is no network activity). Compiling libpcap 0.4 fresh from the tar fixes the problem.
Theres a patch available at http://ethereal.zing.org/~gerald/libpcap-0.4-guy-gerald.patch (assuming this problem is what you are referring to). I just started using ethereal, and this patch apparently fixes the stalling problem according to the ethereal download page. However, it doesn't patch to the SRPM source, so I haven't tested it. mikepery: The libpcap RPM is built from the tcpdump SRPM.
*** This bug has been marked as a duplicate of 6773 ***