public bool leave_multicast_group_ssm (InetAddress group, InetAddress? source_specific, string? iface) throws Error
Removes this from the multicast group defined by
source_specific (which must all have the same values they had when you joined the group).
this remains bound to its address and port, and can still receive unicast messages after calling this.
a InetAddress specifying the group address to leave.
a InetAddress specifying the source-specific multicast address or null to ignore.
Name of the interface to use, or null
true on success, false on error.