Question 570
A tunnel to an interoperable third-party firewall never establishes an IKE SA. Packet capture shows IKE negotiation messages are exchanged but fail authentication; no phase-two selector negotiation starts. The controls that address the separate requirement to handle IPv6 payloads under supported site-to-site VPN are already working as designed, and the change ticket must not disturb them. Which R82 action addresses the remaining symptom?
Explanation
Correct Answer
IKE agreement and authentication are prerequisites for tunnel setup. This directly addresses the documented incident evidence.
Incorrect Answers
Data associations still need matching selectors and permitted traffic; this does not resolve the observed condition.
Both sides need consistent configured IKE authentication secrets, yet that applies to authenticate a third-party IPsec peer with a shared secret rather than the observed issue.
R82 IPv6 VPN tunneling uses IPv6 within IPv6 and IKEv2, but the current evidence calls for a different R82 operation.