On Sequoia it became impossible to properly debug programs using third party mDNS, multicast or broadcast, thanks to a bug? in I guess the new local network privacy feature, every send call returns no route to host. If I run the CI job, which properly packages, signs, notarizes said program, the resulting .app works fine and also requests permission to access the local network - which is impossible through lldb as it doesn't have an Info.plist, just the ***** binary itself. However this may not be the issue, see the repro method below. A fast and easy method to reproduce is using an example from this repo: https://github.com/keepsimple1/mdns-sd/ Running the query example in a good old shell without lldb (cargo run --example query _smb._tcp) starts outputting results. Then running the same binary through lldb (lldb -o run target/debug/examples/query _smb._tcp) would result in no route to host errors. I can't provide an output anymore as I was forced to downgrade. It works fine again on 14.6.1. I'm a bit reluctant to even try 14.7. Also reported in feedback assistant: FB15185667