Messages in this thread | | | Date | Wed, 8 Dec 2004 13:33:59 -0800 | From | Chris Wright <> | Subject | Re: IGMP packets? |
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* FoObArf00@netscape.net (FoObArf00@netscape.net) wrote: > I have 3 machines. A (eth0) is connected to B (eth1) with a cross over > cable and B (eth0) and C (eth0) are on a switch. I want to forward the > igmp queries and reports that A (eth1) generates when joining/leaving a > multicast group on B (eth1) from B(eth0) to C (eth0). I put the code to > do this on different places such as ip_rcv, ip_route_input, etc and no > luck. The weird thing is that it works when I do a tcpdump on B's eth1.
Sounds like B(eth1) is filtering the packets. Does it also work if you enable IFF_ALLMULTI on eth1 (instead of IFF_PROMISC)? Also, what kernel are you using? Does a group join on A generate a v1 or v3 report?
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