> As rndc is one shot command, it's nothing critical, but:
> 
> a) it increases the tests log
> b) it might indicate some underlying problem
> 
> so let's get this fixed for 9.12.0

Let's definitely fix it, but not for 9.12.0.  It's not a regression, it's
going to take signficant work in libisccc, and we're supposed to be
code-freezing the release candidate today.