check your multicast connectivity

 Tools to check whether you can receive Source Specific Multicast (SSM)
 or Any Source Multicast (ASM) via either IPv4 or IPv6
 .
 If a host runs ssmpingd, users on other hosts can use the ssmping client
 to test whether they can receive SSM from the host. Another program
 called asmping is also provided to check whether can receive ASM.