BTNS Progress Report 4
New patch released. Get it at the project page. The howto document has been updated.
The new patch adds a new keyword, “btns”, that you can add to a policy, like this:
ikev2 active esp from 10.0.0.6 to 10.0.0.4 srcid ipsec3.hack.org btns
The “btns” keyword means it's not an error if we can't validate the public key the peer sends us, that is, Better-than-nothing security.