ifconfig format was incorrect for certain mode combinations, leading to OpenVPN failing to start.
Changed wording on GUI TN field descr so it's more clear that the TN shouldn't be set in most cases, also mention that the user should be careful to match Topology with the server.
Related issues
Regression #13350: SSL/TLS OpenVPN Client fails with ``ifconfig`` error when the IPv4 Tunnel Network is defined
Added by Jim Pingle about 2 years ago
Fix handling of OpenVPN client TN. Fixes #13350
to OpenVPN failing to start.
shouldn't be set in most cases, also mention that the user should be
careful to match Topology with the server.