This should be changed to IPv6:
http://[::1]:8080/register
@hallunke23 When I am setting up on a loopback address, you typically do that for either testing/debugging or internal purposes. It's unpleasant when the server listens on the port on only one of the two protocols. It makes the setup hard. I just don't like guessing (or looking it up) whether the server is on [::1] or 127.0.0.1.
Also, for these purposes, I don't need new fancy features of IPv6. IPv6 is great in real networks, but makes my live harder, when used at the loopback interface.