So, the results are the following:

Clean install of debian server, installing all the requirements in order to
do "make deb".
1. If I do "make deb" with the applied patch, the clients can't connect
anymore. (they're getting error 809, that error that requires to change
AssumeUDPEncapsulationContextOnSendrule to value "2".
2. If I do "make deb" WITHOUT the applied patch, using the exactly same
configure files, they can connect instantly.

Here you can find debug=all of ipsec using the patch ->
Thank you!

2018-04-12 23:59 GMT+03:00 Mircea Troaca <>:

> After I applied the patch with a success and installing the .deb package
> worked like a charm.
> But.. the problems appears again..
> After installing the .deb with dpkg, when I try, as a client, to connect
> to the server, on windows I am getting 809 error (that retarded thing which
> makes u modify windows registry and set value 2 on AssumeUDPEncapsulation)
> with the EXACTLY same config of ipsec..
> Thank you for everything so far.
> 2018-04-12 20:01 GMT+03:00 Paul Wouters <>:
>> On Thu, 12 Apr 2018, Mircea Troaca wrote:
>> Excuse my "stupidity".. but, how? :D
>>> I am running on a debian 9 server
>> once you have the proper buildessentials installed, you can try this:
>> wget
>> tar zxf libreswan-3.23.tar.gz
>> cd libreswan-3.23
>> patch -p1 -s < /path/to/file.patch
>> make deb
>> Paul
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