Well, before you start typing code left and right, do the following test that won’t take you long.
The important thing about this test is that you will do it with a graphical interface, seeing what you do and the risk of making a mistake will be much lower than if you start typing commands in the terminal. In the end, since you are seeing what you do (and writing it down), if it doesn’t work, you can leave it as it was and not make the problem any bigger.
I will detail the test (Make sure you understand each step before trying it).
1.- Stop the apps you have installed on your umbrel.
2.- Access your umbrel via SSH.
3.- Follow the instructions I made to configure a static IP. The process is the same, except for the end: HOW-TO Static IP on UmbrelOS (in a simple and practical way)
4.- When you get to the part about configuring the IPv4 static IP, you can take advantage of it to configure a static IP and stop depending on your router’s DHCP or leave it as it is. In that same window, keep going down until you get to IPv6 Configuration and you should have it on “Automatic”. Click there to show you options and choose “Disabled”. Save the changes and back, back, back, closing everything after “Save changes”, obviously.
5.- Restart your umbrel and check if the problem continues.
If the problem continues, perform the process again and leave it as it was initially. I assume you have it written down. Don’t trust your memory.
And let’s see what happens…