So while some consider static IP address on the device itself and DHCP reservation just as different implementations of static IP address, others consider these already as different, not just different implementations. Many here would consider the one used on a device itself and DHCP reservation usually as synonyms (with DHCP service active and running). But I had to learn that at least here in the Spiceworks community, there exists a broader definition than I'm used to of static IP address. I know the difference as I'm used to a more traditional definition of static IP address. You used static IP address in your subject/title and DHCP reservation in your original post. In 30 minutes, the APIPA service will try DHCP again. And because there is no valid gateway, the device can't talk to any other IP ranges. Unless the rest of your network uses that range, the device will not be able to talk to other devices. If the DHCP server doesn't re-authorize the lease, it runs out and the device no longer believes it has a valid address. Usually when half the time has expired, the device will re-request the DHCP address to renew the lease. Part of a DHCP "lease" (of IP address) includes a timer that tells the requesting device how long the IP is good for. Also why would it take a few hours after turning DHCP off for the internet to be unreachable, wouldn't that be something instant? Thanks! So, for example, if I am unable to set a static IP on the device, I am unable to reserve/disable DHCP on the router. Very newbe question very good explanation.
![technicolor modem wifi not working technicolor modem wifi not working](https://www.normann-engineering.com/products/product_pics/cable_modems/technicolor/CGA4233_katalog.jpg)
Thank you Robert5205 I had a feeling this was the case.