How could we be assured of a unique mcast address?

When we use address N for a global scope multicast group address, what technique would ensure us that N is not currently used by other global scope multicast applications?
[178 byte] By [hiwaa] at [2007-11-26 17:18:00]
# 1
See the book #11.9 Multicast Address Allocation.a dynamic protocol is proposed: MADCAP (RFC 2730). See also RFCs 2098 and 3559.
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