When devd starts it offers a link to http://devd.io:8000, and we are therefore relying on external DNS to resolve this as 127.0.0.1.
Unfortunately, today I noticed that although *.devd.io is answering correctly, there is no A response to just devd.io.
(There also isn't an AAAA response, and it might be interesting to look at that as well for the future ...)