ath79 is the successor of ar71xx. It's modernization under the hood, with the main goal to bring the code into a form that is acceptable for Linux upstream, so that all (most) of the whole ar71xx supported devices can be handled by an upstream, unpatched Linux kernel.1)
OpenWrt 22.03.3 r20028-43d71ad93e / LuCI openwrt-22.03 branch git-22.361.69894-438c598
OpenWrt 19.07.2 r10947-65030d81f3 / LuCI openwrt-19.07 branch git-20.057.55219-13dd17f
the same situation.
Create 2 more vlans, say 5 and 10. Both tagged on CPU.
Remove lan1 from vlan1 (toggle to off) then in vlan 5 toggle it untagged,
Same for lan2 and vlan10.
Use the new vlan subinterfaces as wan1 and wan2.
I managed to get two interfaces to work:
eth1 (DHCP) - main wan
eth0.2 (DHCP) - second wan on 4th physical port
Both providers respond through ping.
I set gateway metrics:
Is it necessary to install MWAN3 or can I get by with a script that switches metrics when eth1 is up/down?
Sorry but the answer is a bit vague, I can't understand you.
If it is possible to get by with a script, tell me how to write it and where to put it. Sorry for persistence.
I don’t need a complex scheme