Why do I see intermittent duplicate IP warnings?
A manually assigned address may overlap DHCP, a stale reservation may exist, or two DHCP servers may be active due to a second router.
ARP; DHCP leases; reservations; second router.
Network engineering.
Show the technical detail
On a managed Wi-Fi plan
Inventory topology, remove duplicate DHCP and reserve addresses centrally.
On another provider's router
Same across ISP routers.
What to be careful of
Do not delete reservations blindly for phones/alarms.
Where this comes from: Official · see the original source ↗ · Draft—technical review · checked 17 August 2026