Re: Broadcom 4400 driver bm44

On Wed, Jul 07, 2004 at 02:21:49PM -0400, James Hubbard wrote:

I have two apps (AppA and AppB) that communicate via multicast.   The
initial discovery process allows the apps to find each other.  The
apps send hearbeats periodically to advertise that they are on the
network.  After a period of time,  AppB can't see AppA.   I would say
that AppB stops seeing AppA after the initial discovery.  I say this
If I use this command: 
ifconfig eth0 allmulti
AppB receives all of the multicast data and can receive data from
AppA.  This in turn  causes a problem where standard communication via
TCP does not function.  Pings, ssh, etc do not work. If I disable
allmulti. All other communication works except for multicast.

Hiya

I'll try to reproduce the problem. It's entirely possible that there's 
something wrong in the multicast filter code. What would be helpful is
some sort of quick testcase that shows this problem. I tried
a minimal multicast test program (mcast.py from the python distribution)
and that worked ok. ifconfig eth1 allmulti did cause the connection
to my home box to hang, so that I can reproduce at least ;) ;) ;)