Check if you can receive ipv4/ipv6 multicast data from an internet host
ssmping [ -46v ] [ -I interface ] [ -c count ] [ -s size ] host
ssmping and ssmpingd are network level multicast management tools that can be used to check whether one can receive multicast packets via SSM from a host. The host target given to ssmping must run the ssmpingd daemon, which listens on UDP port 4321 for IPv4 and IPv6 unicast requests. When it receives one, it responds to a well known SSM multicast group which ssmping just have joined. Depending on whether the request was made with IPv4 or IPv6, the group is 18.104.22.168 or ff3e::4321:1234 respectively.
For ssmpingd there are no options. For ssmping the options are as follows.
Print client and server version information.
Interface to join on
Stop after sending (and receiving) count requests (and replies)
Request replies to have a size of size bytes
Please report them to Stig Venaas <[email protected]>, the author of this tool.
ssmping and ssmpingd were developed by Stig Venaas during the early days of the m6bone, the IPv6 multicast backbone.