L2TP VPN disconnects on Android Phone in 2mins
ZyWALL 110 V4.33(AAAA.0)ITS-WK30-r89425
I'm sure this used to be stable the setup is fine the VPN connects and traffic goes down the VPN but only for 2mins then it disconnects.
Edit I'm back with bad news
So I rolled back the firmware...which was painful to do.
and ONLY then was the VPN stable, but this firmware has the MAC not set on reboot bug so maybe thats the reason?
to test which I think has the MAC problem fixed and if the VPN works stable on them.
Tested 425AAAA1ITS-WK33-2017-08-24-170800167 that has the set interface MAC on reboot bug fixed and the VPN is stable so the problem happened between.