RE: Multicast Broadcast

	One potential work-around is a patch to
net/ipv4/igmp.c:ip_mc_join_group.
For example:

#ifdef DUAL_MCAST_BIND
   if(!imr->imr_ifindex) {
      imr->ifindex=2;  /* eth0 */
      err=ip_mc_join_group(sk, imr);
      if (!err) {
        imr->ifindex=3; /* eth1 */
        err=ip_mc_join_group(sk, imr);
      }
      return err;
   }
#else
   if(!imr->imr_ifindex)
     in_dev = ip_mc_find_dev(imr);
#endif

	I'm hoping that there is another way.

Wayne
EMC Corp
ObjectStorEngineering
4400 Computer Drive
M/S F213
Westboro,  MA    01580

email:       [e-mail]

"One man can make a difference, and every man should try."  - JFK

-----Original Message-----
From: Jamie Lokier [mailto:[e-mail]]
Sent: Friday, November 23, 2001 3:53 PM
To: [e-mail]
Cc: [e-mail]
Subject: Re: Multicast Broadcast

[e-mail] wrote:
> 	I have a cluster that I wish to be able to perform a multicast
> broadcast over two backbones, primary and secondary, simultaneously. The
two
> eth's are bound to the same VIP. When I perform the broadcast, it only
goes
> out on eth0. 

I have seen this problem when trying to use an NTP server to multicast
to two ethernets.  Unfortunately, NTP's output would only send to one of
the networks (eth0).

I never did find a workaround.

-- Jamie