Is UseIPAsName really used?

[kaiyou]

This setting is not documented in README.md and explicitely marked as a testing setting in config.go. However, I cannot foresee a testing use case for it, especially when e2e.sh makes no use of it for automated e2e testing.

Is it really used? And if not, should we get rid of it?

[costela]

It was added to ease local testing on the same machine without having to set up docker+wireguard-go (it predates the e2e tests). It can probably be removed since it's now pretty easy to start docker containers with tests/Dockerfile.