Simplified joinedMulticastgroup. Removed non-required functions and includes. Former-commit-id: 829b5c6f89ee1e9a4789dbe18f911b05e3b5d8e1
Code cleanup. Former-commit-id: af8a6df876f334c9a65b1a936b5bb85b380d86d1
Former-commit-id: 51ad57afd39695095b5886966e8c71c4e47f269e