I didnt understand the issue aof address allocation in ssm.? we have a source S and a receiver say R want to recieve informations from S. So in that case R should inform its DR by using IGMPv3. How R knows that he is a member of a group G and how is G is allocated? is the address g is allocated by the application ?? I just want to know the complete process because it is not clear in the drafts. thanx