[Unbound-users] Exception for private domains?

[Stephane Bortzmeyer]

At work, we use a private TLD (I did not decide, don't hit me, not my
fault, I don't speak for my employer, etc), and a validating Unbound
resolver was able to use it with forward-zone.

Now that the root is signed and validated, I get a SERVFAIL, probably
because the root says NXDOMAIN.

Is there any way to tell Unbound to bypass the validation through the
root for a given domain?