Compatibility with luci-app-openvpn (dhparam path)
When luci-app-openvpn is used/installed it reconfigures dh
option in /etc/config/openvpn
to option dh '/etc/dhparam/dh-default.pem'
. It also creates link: /etc/dhparam/dh-default.pem -> /etc/dhparam/dh2048.pem
(although this creation seems to be unreliable but that is not Foris problem)
Foris should probably behave the same way as luci-app-openvpn although thanks to Foris creating its own configuration unless that specific configuration is edited by luci app it should be fine.
Problem is somewhere between foris and luci app because it seems that configuration created from foris is not correctly read from luci app and saving configuration in luci then overrides that to invalid values.