I have the same issue as @Drop afer using an attended sysupgrade to go from 24.10.1 to 24.10.2.
I can connect via ethernet, but there is no internet now even though my ISP router is still connected to the WAN port.
On the openwrt status page, it says eth1 has "no link" but it is connected to the ISP router.
And for wireless connections, the DHCP server doesn't seem to be working at all.
What are the routes to getting back to the working configuration? Can I just flash a new 24.10.1 image (or try a new 24.10.2 image without the attended sysupgrade?) or do I need to go back to the very start?
EDIT.
I think I have fixed it. All I had to do was connect to the router web interface using static IP (ethernet cable worked better than wireless at first) and then under network, interfaces set wan to be eth1 instead of the default value after the upgrade.