Openswan's IKEv2-only mode does not work properly when pluto is acting as the responder

Solution Verified - Updated -


When configuring Openswan with the ikev2=insist option, if an IKEv1 peer initiates the connection, the IKEv1 connection is still allowed. The policy flags displayed in 'ipsec auto --status' indicate that IKEv1 is disabled, and the ipsec.conf man page states that ikev2=insist means we should only propose and accept an IKEv2 negotiation.


  • Red Hat Enterprise Linux 6
  • openswan-2.6.32-20.el6

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