NetworkManager-l2tp is compatible with either libreswan or strongswan.
With the prebuilt binary packages for the dependencies on strongswan and libreswan , use Recommends instead of Requires, so users can switch between strongswan or libreswan.
Fedora and derivatives have been shipping both strongswan and libreswan for a number of years.
Debian and Ubuntu have been shipping with strongswan for a number of years and in the last few months started shipping libreswan.
NetworkManager-l2tp is compatible with either libreswan or strongswan.
With the prebuilt binary packages for the dependencies on strongswan and libreswan , use Recommends instead of Requires, so users can switch between strongswan or libreswan.
Fedora and derivatives have been shipping both strongswan and libreswan for a number of years.
Debian and Ubuntu have been shipping with strongswan for a number of years and in the last few months started shipping libreswan.