[strongSwan] Real of Strongswan from Ubuntu repository !

[CpServiceSPb .]

Hi.
I have Ubuntiu 14.04 LTS.
Recentky, I updated Stronswan to 5.1.2-0ubuntu2.2 version.
What is the real Strongswan version ?
Is it 5.1.2 with some minor changes or already 5.2+ ?
And how is to define for real Strongsan version for the future buildings ?
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