[strongSwan] Query on INITIAL_CONTACT

MOHIT CHALLA (mochalla) mochalla at cisco.com
Wed Jul 14 10:05:59 CEST 2021

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).


From: Tobias Brunner <tobias at strongswan.org>
Date: Wednesday, 14 July 2021 at 1:18 PM
To: "MOHIT CHALLA (mochalla)" <mochalla at cisco.com>, "users at lists.strongswan.org" <users at 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".


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