I just managed to compile and run vibe.d but I get the following error messages:

Running /tmp/dub/4229398104/vibe-test...
Listening for HTTP requests on :::8080
Failed to listen on 0.0.0.0:8080

It listens on localhost:8080. So I could test it.

What is causing this error message ? Apparently it tries to listen on IPV6, then say it can't listen on an IPV4 address.
What exactly is happening ?

My network card is configured for IPV4 only. I expect that at least 0.0.0.0:8080 would work.