Multicast Hate

I am trying to get multicast routing between two subnets running. Why has this to be so complicated? The kernels have the right stuff compiled in, the routing daemon is running but it ignores the IGMP reports of its peers. Even the much hated rp_filter is turned off... :-( 12:16:41.141 SENT IGMP Membership Query from 192.168.1.34 to 224.0.0.1
12:16:41.142 SENT IGMP Membership Query from 192.168.2.34 to 224.0.0.1
12:18:46.115 SENT IGMP Membership Query from 192.168.1.34 to 224.0.0.1
12:18:46.116 SENT IGMP Membership Query from 192.168.2.34 to 224.0.0.1
12:20:50.298 SENT IGMP Membership Query from 192.168.1.34 to 224.0.0.1
12:20:50.299 SENT IGMP Membership Query from 192.168.2.34 to 224.0.0.1
12:22:55.342 SENT IGMP Membership Query from 192.168.1.34 to 224.0.0.1
12:22:55.342 SENT IGMP Membership Query from 192.168.2.34 to 224.0.0.1