How to? USB-modem not connected -> automatically use WAN-port

[Hårald]

Hi
First I have to thank Eric/Gargoyle and OpenWRT/community for the great firmware!

And the question.
I have two internet connections:
1) via WAN port / DHCP (from ADSL modem)
2) via USB (4G phone / Android)
Is it possible to switch automatically to DHCP when USB modem is not connected/lost, and vice versa, is it possible switch to USB modem automatically when its connected?

I have TP-Link Archer C7 v2.1

Thank you!

[Lantis]

There's a "simplefailover" package you could compile from here
https://github.com/obsy/packages/tree/m ... lefailover

[ispyisail]

That would make a nice plugin

[Hårald]

There's a "simplefailover" package you could compile from here
-Newbie URL removed-

Thanks for info, but I lack skills to do that

That would make a nice plugin

Maybe someday someone do this