I am trying to create an app that lets the user send Wake On LAN calls to computers in the local network. I created a small package that uses BSD sockets (https://github.com/pultar/WakeOnLAN/blob/main/Sources/CWakeOnLAN/wol.c) to send the magic packet. For now, I select "en0" manually as the interface.
The app works in the simulator but fails on a real device. I also noticed that I can test the package when I only use the terminal and Swift Package Manager but not from a CLI within XCode. In either case, I observe:
"No route to host"
Following previous post in the forum (see below), I figured I require the multicast entitlement, which I was granted and could add in the Xcode project settings and on Apple Developer together with my App Bundle ID.
However, even after activating the entitlement for my app, I observe the same error.