From owner-freebsd-net@freebsd.org  Fri Jul 21 10:09:52 2017
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Subject: Re: ipsec encryption only via given route
To: Kajetan Staszkiewicz <vegeta@tuxpowered.net>,
 FreeBSD Net <freebsd-net@freebsd.org>
References: <3526072.muFbfPklCK@energia>
From: Eugene Grosbein <eugen@grosbein.net>
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Date: Fri, 21 Jul 2017 17:09:35 +0700
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20.07.2017 23:17, Kajetan Staszkiewicz пишет:
> Hey group,

> Can I somehow make IPsec encryption to happen AFTER routing decision and 
> ensure that it happens only when traffic leaves via specified interface?

You may want to upgrade to 11.1-RELEASE and utilize its new if_ipsec(4) feature
targeted for creating route-based VPNs.

https://www.freebsd.org/cgi/man.cgi?query=if_ipsec&apropos=0&sektion=0&manpath=FreeBSD+11.1-RELEASE&arch=default&format=html