Skip site navigation (1)Skip section navigation (2)
Date:      Tue, 8 Jun 1999 10:02:51 -0400
From:      Dave Alden <alden@math.ohio-state.edu>
To:        freebsd-net@freebsd.org
Subject:   bridging and multicast (in FreeBSD 3.2-RELEASE)
Message-ID:  <19990608100251.B28732@zaphod.mps.ohio-state.edu>

next in thread | raw e-mail | index | archive | help
Hi,
  Has anyone had any trouble (or success for that matter :-) using the
builtin bridge(4) with multicast packets?  I'm running 3.2-RELEASE.
When I run tcpdump on a Sun that is behind the bridge, I get the
following (note that both machinea and machineb are on the 'outside'
of my bridge):

09:35:24.338648 truncated-ip - 14280 bytes missing!machinea.35468 > 224.2.0.1.43211: udp 28 (ttl 17, id 12534, bad cksum e3ca!)
09:35:24.378846 truncated-ip - 15300 bytes missing!machineb.38860 > 224.2.0.1.43211: udp 32 (ttl 31, id 38687, bad cksum ab27!)


tcpdump from the bridge computer:

09:35:24.495187 machinea.35468 > 224.2.0.1.43211: udp 28 (ttl 17, id 63024)
09:35:24.535392 machineb.38860 > 224.2.0.1.43211: udp 32 (ttl 31, id 8087)

I've set net.link.ether.bridge=1 and tried setting net.link.ether.bridge_ipfw
to both 1 and 0 (I get the same result).  My ipfw rule is:

65535 allow ip from any to any

Any ideas?

...thnx,
...dave alden


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-net" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19990608100251.B28732>