IPv6 Multicast Addresses

Construct (FF…)

xxxx xxxx FFFF SSSS : Group ID X = FP = 1111 1111 = FF F= Flag S = Scope

Scope

0 = Reserve 1 = Node-local Scope 2 = Link-Local Scope 5 = Site-Local Scope 8 = Organization-Local Scope e = Global Scope f = Reserved

Example

FE80::6b:28c:16D2:c97  = Host IPv6 Address
FF02::     1:FF00:0 /104 = to process all Link-local hosts of the last 24 Bit Hosts
FF02::     1:FFD2:C97  = Corresponding solicited-node Address

Bit net mask help

16:32:48:64:80:96  :  100 104 108 112  :   116 120 124 128

 

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