I’m testing openvpn over stunnel4 and I found a weird issue:  I have to restart my Ubuntu 18.04 to be able to start the stunnel service.  Don’t know why I couldn’t start the service dicrectly by :

Systemctl start stunnel4

OS: Ubuntu 18.04

#>apt install stunnel4

and  generate a conf like this:

cert=/etc/stunnel/server.crt

key=/etc/stunnel/server.key

[openvpn-localhost]

accept = 8443

connect = 127.0.0.1:11000

Now start the service:

#>systemctl start stunnel4

#>systemctl status stunnel4

stunnel4.service - LSB: Start or stop stunnel 4.x (TLS tunnel for network daemons)

   Loaded: loaded (/etc/init.d/stunnel4; generated)

   Active: active (exited) since Wed 2020-01-15 14:40:11 CST; 10min ago

     Docs: man:systemd-sysv-generator(8)

    Tasks: 0 (limit: 4915)

   CGroup: /system.slice/stunnel4.service

Jan 15 14:40:11 iZ8vb6j45u355dm236tpibZ systemd[1]: Starting LSB: Start or stop stunnel 4.x (TLS tunnel for network daemons)...

Jan 15 14:40:11 iZ8vb6j45u355dm236tpibZ stunnel4[3583]: TLS tunnels disabled, see /etc/default/stunnel4

Jan 15 14:40:11 iZ8vb6j45u355dm236tpibZ systemd[1]: Started LSB: Start or stop stunnel 4.x (TLS tunnel for network daemons).

Why it exited?  But after reboot, same command will just work.  Is it a bug?

I want to find a way to start it directly after installation. Please help!

Best Regards

Robin