[strongSwan] Unit test failure on Ubuntu package build

[Tobias Brunner]

Hi Florian,

>  Unfortunately, after the 64 bit build two of the unit tests fail:

The failing tests require ::1 to be available.  So either change the
network config on your build host, or disable the tests when building
the package (look for dh_auto_test in debian/rules).

Regards,
Tobias