[ietf-dkim] selectors, _policy._domainkey

[Eric Allman]

> There's a glitch in the ABNF for s=. It refers to both "subdomain"
> and "sub-domain". Both should be "sub-domain".

Thanks.  As it is I had already changed the ABNF here for -04, so it 
was already fixed.

> In section 3.6.2.1, we could reserve the use of _* labels as used in
> leaves off of _domainkey for extensions related to DKIM.

Since the only other thing that can be in _domainkey (in the current 
draft at least) is selectors, and those can't have underscores, is 
there a need to do this?

eric