OpenVPN connection loses static route after SIGUSR1

[Samuel Casa <samuelcasa9 gmail com>]

Hi!
I am using the NetworkManager 1.0.12 to configure a VPN connection as
a 'secondary'.
If I bring the connection manually down and up using nmcli, the static
route pushed by the server is added successfully on the client [0].
If I send a SIGUSR1 (forced server ping-restart trigger) to the
openvpn process, the static route pushed by the server is missing in
the clients route configuration [1].

The static route is pushed in both cases by the server, I can verify
this on client and on server side.

Where do we lose this information?
What I can see is that the helper application
nm-openvpn-service-openvpn-helper is called with the arguments init
(up / down) and restart (SIGUSR1).
The route information should be in the process environment at this
time, but it seems to be missing.

How to debug this in the best way?
Samuel


[0] IPv4 config after manual restart
Jun 20 17:21:59 host NetworkManager[9885]: <info>  VPN connection
'VPN0' (IP Config Get) reply received.
Jun 20 17:21:59 host NetworkManager[9885]: <info>  VPN connection
'VPN0' (IP4 Config Get) reply received.
Jun 20 17:21:59 host NetworkManager[9885]: <info>  VPN Gateway: 192.168.10.14
Jun 20 17:21:59 host NetworkManager[9885]: <info>  Tunnel Device: tun0
Jun 20 17:21:59 host NetworkManager[9885]: <info>  IPv4 configuration:
Jun 20 17:21:59 host NetworkManager[9885]: <info>    Internal Gateway:
10.42.0.69
Jun 20 17:21:59 host NetworkManager[9885]: <info>    Internal Address:
10.42.0.70
Jun 20 17:21:59 host NetworkManager[9885]: <info>    Internal Prefix: 32
Jun 20 17:21:59 host NetworkManager[9885]: <info>    Internal
Point-to-Point Address: 10.42.0.69
Jun 20 17:21:59 host NetworkManager[9885]: <info>    Maximum Segment
Size (MSS): 0
Jun 20 17:21:59 host NetworkManager[9885]: <info>    Static Route:
10.42.0.1/32   Next Hop: 10.42.0.69
Jun 20 17:21:59 host NetworkManager[9885]: <info>    Forbid Default Route: yes
Jun 20 17:21:59 host NetworkManager[9885]: <info>    DNS Domain: '(none)'

[1] IPv4 config after SIGUSR1 forced restart
Mon Jun 20 17:11:17 2016 us=21176 SIGUSR1[hard,] received, process restarting
Mon Jun 20 17:11:23 2016 us=149248 PUSH: Received control message:
'PUSH_REPLY,route 10.42.0.1,topology net30,ping 10,ping-restart
120,ifconfig 10.42.0.70 10.42.0.69'
Mon Jun 20 17:11:23 2016 us=152854
/usr/lib/networkmanager-openvpn/nm-openvpn-service-openvpn-helper
--tun -- tun0 1500 1542 10.42.0.70 10.42.0.69 restart
Jun 20 17:11:23 host NetworkManager[9885]: <info>  VPN connection
'VPN0' (IP Config Get) reply received.
Jun 20 17:11:23 host NetworkManager[9885]: <info>  VPN connection
'VPN0' (IP4 Config Get) reply received.
Jun 20 17:11:23 host NetworkManager[9885]: <info>  VPN Gateway: 192.168.10.14
Jun 20 17:11:23 host NetworkManager[9885]: <info>  Tunnel Device: tun0
Jun 20 17:11:23 host NetworkManager[9885]: <info>  IPv4 configuration:
Jun 20 17:11:23 host NetworkManager[9885]: <info>    Internal Gateway:
10.42.0.69
Jun 20 17:11:23 host NetworkManager[9885]: <info>    Internal Address:
10.42.0.70
Jun 20 17:11:23 host NetworkManager[9885]: <info>    Internal Prefix: 32
Jun 20 17:11:23 host NetworkManager[9885]: <info>    Internal
Point-to-Point Address: 10.42.0.69
Jun 20 17:11:23 host NetworkManager[9885]: <info>    Maximum Segment
Size (MSS): 0
Jun 20 17:11:23 host NetworkManager[9885]: <info>    Forbid Default Route: yes
Jun 20 17:11:23 host NetworkManager[9885]: <info>    DNS Domain: '(none)'