Public bug reported:

I'm seeing some weird issue with the new NM + openvpn; if I create a new
VPN connection, and add certificate options (verify name exactly, plus
TLS auth), these options are not saved, leading to the connection
failing.

The following versions lead to an invalid connection:
ii  network-manager               1.12.4-1ubuntu1     amd64               
network management framework (daemon and userspace tools)
ii  network-manager-openvpn       1.8.6-1             amd64               
network management framework (OpenVPN plugin core)


Reverting to the following versions, things work again:
ii  network-manager               1.12.2-0ubuntu4     amd64               
network management framework (daemon and userspace tools)
ii  network-manager-openvpn       1.8.4-1             amd64               
network management framework (OpenVPN plugin core)


If I use an existing connection saved with a prior version of NM, the 
connection will be successful. If I go open the settings, hit Apply, all 
advanced TLS settings are wiped.

The connection then fails:

Oct 10 16:58:52 demeter nm-openvpn[6538]: NOTE: the current --script-security 
setting may allow this configuration to call user-defined scripts
Oct 10 16:58:52 demeter nm-openvpn[6538]: TCP/UDP: Preserving recently used 
remote address: [AF_INET]91.189.91.19:443
Oct 10 16:58:52 demeter nm-openvpn[6538]: Attempting to establish TCP 
connection with [AF_INET]91.189.91.19:443 [nonblock]
Oct 10 16:58:53 demeter nm-openvpn[6538]: TCP connection established with 
[AF_INET]91.189.91.19:443
Oct 10 16:58:53 demeter nm-openvpn[6538]: TCP_CLIENT link local: (not bound)
Oct 10 16:58:53 demeter nm-openvpn[6538]: TCP_CLIENT link remote: 
[AF_INET]xx.xx.xx.xx:443
Oct 10 16:58:53 demeter nm-openvpn[6538]: Connection reset, restarting [0]
Oct 10 16:58:53 demeter nm-openvpn[6538]: SIGUSR1[soft,connection-reset] 
received, process restarting
Oct 10 16:58:58 demeter nm-openvpn[6538]: WARNING: No server certificate 
verification method has been enabled.  See http://openvpn.net/howto.html#mitm 
for more info.
Oct 10 16:58:58 demeter nm-openvpn[6538]: NOTE: the current --script-security 
setting may allow this configuration to call user-defined scripts
Oct 10 16:58:58 demeter nm-openvpn[6538]: TCP/UDP: Preserving recently used 
remote address: [AF_INET6]2001:67c:1562:0:1::1:443
Oct 10 16:58:58 demeter nm-openvpn[6538]: Attempting to establish TCP 
connection with [AF_INET6]2001:67c:1562:0:1::1:443 [nonblock]
Oct 10 16:58:59 demeter nm-openvpn[6538]: TCP: connect to 
[AF_INET6]xxxx:xxx:xx:xx::xx:443 failed: Network is unreachable
Oct 10 16:58:59 demeter nm-openvpn[6538]: SIGUSR1[connection 
failed(soft),init_instance] received, process restarting
Oct 10 16:59:04 demeter nm-openvpn[6538]: WARNING: No server certificate 
verification method has been enabled.  See http://openvpn.net/howto.html#mitm 
for more info.

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: network-manager-openvpn (Ubuntu)
     Importance: Undecided
         Status: New

** Also affects: network-manager-openvpn (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1797236

Title:
  network-manager openvpn settings not being saved

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