This happened to me again twice within 2 days and I spent hours trying to resolve - including trying backdated firmware and the suggested latest stable Merlin firmware all of which failed to resolve the issue. 😫
What did work the first of those two times was eventually a change in modem to router cat 6 cable which was enough to get a WAN IP from the DHCP server.
The second time it happened the resolution was to swap over the Older AC68 for the Newer AC68 - reconfigure as the main router and leave all other connections off the router until reboot of router then connect to modem and power on(having checked the modem was connected to the internet before powering off).
I know the lease is something like 6 or 7 days but in practice the WAN IP very rarely changes so with that in mind I've taken note of the following.
(This will only work if the WAN IP hasn't actually been reassigned by the DHCP server)
which if you select Static IP under the WAN - Internet Connection - Basic Config
you can enter manually - save it then reboot the router and check that it works.
Once that has been done - save a copy of the config for future reference - I normally out a date code against it.
You can then return the WAN Connection type back to Automatic IP and reboot - hopefully all will still be working as normal.
Should the problem reoccur - simply change the Automatic IP to Static IP and all your previously save setting should be in there.
Apply - reboot and you should get your connection back so long as the WAN IP hasn't been released and changed.
HTH anyone maintain a more stable connection at least until the fix the DHCP problem from Virgin - or possibly a firmware glitch from ASUS 😇
Sounds like an ASUS issue. Though it doesn’t exist with mine
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