Openvpn process keeps running after client crash

• Problem: openvpn process remains running (as root) after crashing

• Debug:

$ ps aux | grep openvpn
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root     23179  0.0  0.0   5800  2640 pts/8    S    16:41   0:00 /usr/sbin/openvpn --client --dev tun --persist-tun --persist-key --remote 176.53.69.19 1194 udp --tls-client --remote-cert-tls server --tls-cipher DHE-RSA-AES128-SHA --cipher AES-128-CBC --auth SHA1 --user ivan --group ivan --management-client-user ivan --management-signal --management /tmp/leap-tmp3GPpxA/openvpn.socket unix --script-security 2 --cert /home/ivan/.config/leap/providers/dev.bitmask.net/keys/client/openvpn.pem --key /home/ivan/.config/leap/providers/dev.bitmask.net/keys/client/openvpn.pem --ca /home/ivan/.config/leap/providers/dev.bitmask.net/keys/ca/cacert.pem

(from redmine: created on 2013-05-21, closed on 2014-05-09, relates #3262 (closed))