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Tag Archive for networking

QEMU VM unable to access (private) subnet on the host

My laptop is running Ubuntu 24.04. I installed qemu and created a VM that also runs Ubuntu 24.04. The setup works fine. Then I connected a Raspberry Pi to the laptop via Ethernet cable (no router involved). This created another subnet (10.42.0.0/24), where the laptop’s IP is 10.42.0.1, and Pi’s IP is 10.42.0.4.

Access point suddenly unable to connect to gateway, yet endpoints can

The other day, one of my access points at home stopped communicating with our gateway. It is connected to the gateway via moca adapter over coax. I swapped the access point with another one and changed cables to no avail. Yet, when I connect the moca adapter directly to any endpoint (PC, console, etc.), they pull dhcp IP assignment and connect fine. It is only when an access point/router is connected that it drops connection.

Should non-browser applications connect to a URL?

I have written a game that users will download. When the game is started, I want it to automatically connect to the matchmaking server. Does that mean that, somewhere in the source code for the game, I should have something like