The other day I put my modem on a digital timer. It turns off at 3:15, and on at 3:16. I'm hoping that this middle of the night, daily reboot will prevent the occasional need to manually reboot. I've noticed that my IP6v IP address changes each day as expected, but the IP4v address doesn't. Does anyone know why?
Answers (1)
I assume that your device is the first one connecting to it after the reboot. If you turn the wifi off/disconnect the RJ45 cable and let another device connect first (through same medium... either wifi or direct cable), you will probably see your IPv4 address change.
Roger that. The device that you are noticing the IPv4 stay the same on, is it always the first one to connect to the router/modem or the first one powered on? This line of reasoning also assumes that you have the network connection setup for DHCP instead of a static address (on the local machine). In case you don't know how to check that, right-click on the network icon in the system tray and select 'Network and Sharing Center' and then 'Change Adapter Settings' followed by finding your connection, right-clicking again and selecting properties. Finally, double-click on the IPv4 entry to see if an address has been entered or DHCP has been checked.
The first device powered up is my desktop computer. I'm using Windows 10 so the path you described is different. However, when I eventually got to Advance TCP/IP settings (from Internet Protocol Version 4 Properties), it says "DHCP Enabled".
I'm also wondering if it stays the same because during the one minute off period at 3:15 AM, no one else is doing something that would grab the address, so I just get it back. As you can tell, my knowledge is extremely light in this area ;-)
The modem/router is one unit. Everything else in the system is powered off for the night when my automatic modem reboot occurs.