Re: [DNSOP] A conversational description of sentinel.

["Paul Hoffman" <[e-mail]>]

On 1 Feb 2018, at 16:48, Geoff Huston wrote:

> I’ve reviewed the (lengthening) thread on this draft, but while I 
> saw posted objections to the use of “xm—" as the initial part of 
> the left-most label here, I did not see any concrete alternate 
> proposals. So on the assumption that I must’ve missed these, could 
> you please resend/remind me of such proposals so that we can use one 
> that we are happy with, and I’ll update the draft accordingly.

The two that were discussed were:

1) No update needed: _is-ta-<tag-index> and _not-ta-<tag-index> are 
fine. The problem that Warren reported of BIND not allowing the 
underscore is easily fixed in BIND's configuration.

2) Some prefix other than <letter><letter><hyphen><hyphen> because of 
RFC 5891.

My preference is #1 because, in general, a label starting with _ has 
been meant for infrastructure, and that's what these labels are. Others 
might like #2 so they don't have to add configuration to BIND (and maybe 
other authoritative servers).

--Paul Hoffman