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IPSec instability with IKEv2
Symptoms
  • IPSec instability with IKEv2.
  • When configure "IKEv2 only", have some tunnel instability (sometime tunnel is up or down without configuration change and even though permanent tunnel is configured).
  • When configure "prefer IKEv2, support IKEv1", have some tunnel instability (sometime tunnel is up or down without configuration change and even though permanent tunnel is configured).
  • When configure "IKEv1 for Ipv4", VPN tunnel is up every time without issue.
Cause

IKEv2 Auth exchange fails if more than one certificate is provided by initiator.


Solution
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