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Issue # 15 -- What kind of tests?
A regular DPD-like exchange
Legitimate, but compromised peer can predict request and respond even if not at that address
DPD-like exchange + cookie
Does not have the above problem
Authentication of addresses
Can detected an en-route modification of an address (= NAT or attacker)
Already decided: Use cookies (and NAT-T payloads to detect NATs)
PPT Version