Many thanks for the clarification Tobias! So, as I understand, along with this particular point that you just clarified, INITIAL_CONTACT (while acting as initiator) has been a day-1 behaviour on StrongSwan (please do correct if this understanding is incorrect).
Thanks, Mohit From: Tobias Brunner <tob...@strongswan.org> Date: Wednesday, 14 July 2021 at 1:18 PM To: "MOHIT CHALLA (mochalla)" <mocha...@cisco.com>, "users@lists.strongswan.org" <users@lists.strongswan.org> Subject: Re: [strongSwan] Query on INITIAL_CONTACT Hi Mohit, This text seems to indicate that StrongSwan sends out INITIAL_CONTACT when it is acting as an initiator unless the above option is set to 'never'. My question is if this has been the behaviour of StrongSwan's implementation since day-1? If a device is using an older version of StrongSwan's implementation, will the above documented behaviour hold true? Older versions (before 5.6.1) also didn't send the notify when the value was set to "no". Regards, Tobias