Hi there... As you said multicast traffic is normaly not routed. But you can do a view steps to do this. First enable multicast support and multicast routing in the routers linux kernel. I've tried to route multicast packets with the iptables -j ROUTE target IIRC, but that doesn't seem to work. The much cleaner is to use the multicast routing daemon (mrouted). On debian systems you can easily apt-get the packet, on other systems i suggest to google around. Greets Basti. > -----Original Message----- > From: netfilter-admin@xxxxxxxxxxxxxxxxxxx > [mailto:netfilter-admin@xxxxxxxxxxxxxxxxxxx] On Behalf Of > ms419@xxxxxxxxxxxxxx > Sent: Monday, February 09, 2004 8:31 AM > To: netfilter@xxxxxxxxxxxxxxxxxxx > Subject: Forwarding Multicast Traffic > > > Two machines communicate with one another using multicast - > mDNS - when > they are on the same network segment. When they are on > separate network > segments, however - though they can connect to one another across a > router - they can't communicate using multicast. I presume > that this is > because the router isn't forwarding multicast traffic to > other network > segments? The router is running Linux kernel version 2.4.23 and > iptables. How can I configure iptables to forward multicast > traffic to > other network segments? > > Thanks very much, > > Jack > > >