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Example Interface goes down (B1) Node B detects it
Node A
Node B
Node B would use a new source address (B2) for the packet sent to Node A at A1 [or A2].
Packet will be blocked at the NAT (for certain NAT types and for stateful packet filtering firewalls)
Initiator
Responder
Src IP: B2
Dst IP: A1
Src Port: X
Dst Port: Y
B2
A1
B1
NAT Binding:
Map
To
NAT
PPT Version