It is local dev environment and I have a database deployed on nearby local host. So it can be said Im just experimenting, yes, but I think it is a pretty common use case.
Moreover xctest was able to present local network access dialogue when also run from Xcode it seems. Maybe Xcode should be able too?
Currently only solution is to ssh port forward like so
ssh -L 80:127.0.0.1:80 another-macbook.local
which is very inconvenient