I would expect ACME to use https://testing.acme.internal https://testing.acme.internal, and not just https://testing.internal https://testing.internal, that wou

I would expect ACME to use https://testing.acme.internal https://testing.acme.internal, and not just https://testing.internal https://testing.internal, that would remove most of the incidental clashes (not malicious ones, of course).