Re: [BUG] credential wildcard does not match hostnames containing an underscore

> I am also not eager to see additional bug reports for this case that
> will need to be fixed under the precedent that we accepted a patch to
> fix it before.  If there's a concern that rejecting these hostnames
> altogether would break existing users, then we can just do nothing, and
> tell users that their syntax is not valid and they need to fix their
> hostnames.  This rule has been documented since before ISO standardized
> C, so it shouldn't be new to anyone deploying systems or DNS.
> 
> So I'm fine with doing nothing, or rejecting these hostnames, but not
> allowing more lenient syntax, because it will probably be broken
> somewhere and we (or someone else in the ecosystem) will have to deal
> with it again down the line.