I believe that you have captured what it takes to set up failover for IPv4. Yet, my opinion also is that such probing and demotion of interface metrics, as well as announcing only the "best" IPv6 upstream, should be core features of OpenWrt and not bolted on (and fighting with DHCP lease renewals).
Please see some previous feature requests:
For WAN fail-over, the current recommendation is to use mwan3. However, there is a significant cognitive overhead even with a pure IPv4 setup, because mwan3 also covers a more exotic use case of load balancing, and needs configuration of interfaces, members, policies, and rules, which looks much more complicated than needed.
There is also an interesting setup, documented here , which uses only metrics for fail-over, and does not involve any policy-based routing. Basically, it sets a backup conne…
Have you ever had a problem with your internet
Loaded up router.lan, and not immediately known whether internet was up or down ?
For now the way to determine if internet is working or not is to scroll down to the IPv4 Upstream section
Look at the address field and, if there is an address IP assigned then you internet might be working
I think there should be at the top of the page, a clear color-coded indicator of internet status, quality and current transfer speed.
It should say something u…