Intermittent connectivity observed with IPsec configured on Openshift

Solution Verified - Updated -

Issue

  • After enabling IPsec at the host level on Openshift nodes, there are intermittent connectivity issues between containers.
  • The connectivity is established again only after a network action is initiated manually, like ping to the host.
  • This happens with Opportunistic Encryption as well as non-Opportunistic configuration.

Environment

  • Openshift Container Platform 3.11.200
  • libreswan-3.25-4.8.el7_6

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