hi, after trying some configuration i didn't come with a solution for the following problem: a Linux box with two eths is acting as a gateway that nat a private lan to go to the internet. The ISP use multicast, and all the isp routers are capable of forwardin multicast traffic. i would like to make it possible to join to multicast group from the inside lan. So the linux box has to forward/nat (i read igmp nat is in the TODO of netfilter) igmp announcement, and after the join it has to forward udp traffic that comes from 224/4. What are the steps to do that with iptables ? Does the linux box has to have Multicast Routing options in the kernel enable ? (looking to the help from the kernel it doesn't look it has to be enable) . Multicast-HOWTO is rather old, and it doesn't have any hint, also mrouted is needed only when you want to tunnel the multicast traffic from a lan to an another that is multicast capable, but that's not the examples 'cause the isp after the linux box can "understand" multicast. Any hint, suggestion, resource for this problem ? Thanks Samuele -- When all the network has eyes, even if we were to send out minds turned into light or electrons... It is a time when "one" is not able to make a "solid", a complex, into data yet...
