I'm working with a CSR 1000v, trying to connect to a Linux machine with strongSwan. If I enable ESN on the strongSwan system, I see the tunnel is not established because the Cisco isn't proposing any use of ESN.
Does IOS provide the capability to enabled ESN support in the IKEv2 proposal? Or does it support ESN at all?
I can't seem to find any information on ESN in the IKEv2 configuration guide.
