buildreq for "localhost works"

[Roland McGrath]

> Apart from the other reply to this post; I can't imagine why would a
> build system need to be this much tied to the build host. I would call
> it a bug in the build system and patch around it.

Oh, please.  Using free TCP ports on loopback is "tied to the build host"?
It's a universal presumption that "localhost" means 127.0.0.1 and/or ::1,
depending what protocols you are speaking at the instant in question.
There's anal, there's draconian, and then there's butthead pointless.