Compatible with NetworkManager 1.20 and later.
Summary of changes since NetworkManager-l2tp 1.20.6 :
- Fix padding of PPP Options dialog.
- Undo PTP peer & ext GW routing prevention workaround first introduced with NetworkManager-l2tp 1.8.4 as workaround no longer works with NetworkManager 1.36. The actual fix should be done in NetworkManager.
- Add support for Manual IPv4 configuration options: Address, Netmask and Gateway.
- Remove deprecated OpenSSL 3 related code
- Load L2TP kernel modules if
NM_L2TP_MODPROBE
env variable set.