[FS#859] OpenVPN is beeing killed with "service openvpn stop" due to short timeout

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - helgadeville (helgadeville) 

Attached to Project - LEDE Project
Summary - OpenVPN is beeing killed with "service openvpn stop" due to short timeout
Task Type - Bug Report
Category - Packages
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - lede-17.01
Due in Version - Undecided
Due Date - Undecided
Details - TP-LINK TL-MR-3220 v.2.x with LEDE 17.01.2 onboard, installed OpenVPN.

Connection opens successfully, however, on stopping with "service openvpn stop", logread shows:

Tue Jun 20 08:36:35 2017 daemon.info procd: Instance openvpn::instance1 pid 4084 not stopped on SIGTERM, sending SIGKILL instead
Tue Jun 20 08:36:35 2017 daemon.notice netifd: Network device 'tun0' link is down
Tue Jun 20 08:36:35 2017 daemon.notice netifd: Interface 'vyprvpn' has link connectivity loss

This causes OpenVPN scripts to abort.

If stopping openvpn with "killall -TERM openvpn", then it gets enough time to end in a nice way and all scripts are OK.

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=859