On 03/27/2017 04:28 PM, Richard Barnes wrote:
> Thanks, Roland.  Interesting draft.
> 
> Couple of first reactions:
> 
> - Why use the target of the PTR instead of just provisioning the TXT
> record directly in the reverse DNS.  (Is there some restriction in the
> spec for reverse DNS that says it's only PTR?)  It seems like by using
> the PTR target, your security analysis gets much more complicated.
> 

The original reason for this was that I held the belief that there was
an RFC that set restrictions on the record types that should exist in
the reverse zones (i.e. PTR/CNAME/NS/SOA) only. After looking through
relevant documents for the last hour though I can't actually find
anything that states this and a number of example zones do seem to
contain other types, notably TXTs.

Based on this I think it does makes sense to remove the use of the PTR
target and just require the provisioning of a TXT record at the reverse
mapping node.

> - For the re-use of "http-01", you should probably specify the contents
> of the Host header.  (Main ACME should probably clarify that for DNS, if
> it's not clear already.)
> 

Good point.

> On Mon, Mar 27, 2017 at 4:38 PM, Roland Shoemaker
> <[email protected] <mailto:[email protected]>> wrote:
> 
>     Probably of interesting to some people here, would love to hear your
>     thoughts.
> 
>     -------- Forwarded Message --------
>     Subject: New Version Notification for draft-shoemaker-acme-ip-00.txt
>     Date: Mon, 27 Mar 2017 13:30:19 -0700
>     From: [email protected] <mailto:[email protected]>
>     To: Roland Bracewell Shoemaker <[email protected]
>     <mailto:[email protected]>>, Roland
>     Shoemaker <[email protected] <mailto:[email protected]>>
> 
> 
>     A new version of I-D, draft-shoemaker-acme-ip-00.txt
>     has been successfully submitted by Roland Bracewell Shoemaker and posted
>     to the
>     IETF repository.
> 
>     Name:           draft-shoemaker-acme-ip
>     Revision:       00
>     Title:          ACME IP Identifier Validation Extension
>     Document date:  2017-03-27
>     Group:          Individual Submission
>     Pages:          6
>     URL:
>     https://www.ietf.org/internet-drafts/draft-shoemaker-acme-ip-00.txt
>     <https://www.ietf.org/internet-drafts/draft-shoemaker-acme-ip-00.txt>
>     Status:       
>      https://datatracker.ietf.org/doc/draft-shoemaker-acme-ip/
>     <https://datatracker.ietf.org/doc/draft-shoemaker-acme-ip/>
>     Htmlized:     
>      https://tools.ietf.org/html/draft-shoemaker-acme-ip-00
>     <https://tools.ietf.org/html/draft-shoemaker-acme-ip-00>
>     Htmlized:
>     https://datatracker.ietf.org/doc/html/draft-shoemaker-acme-ip-00
>     <https://datatracker.ietf.org/doc/html/draft-shoemaker-acme-ip-00>
> 
> 
>     Abstract:
>        This document specifies identifiers and challenges required to enable
>        the Automated Certificate Management Environment (ACME) to issue
>        certificates for IP addresses.
> 
> 
> 
> 
>     Please note that it may take a couple of minutes from the time of
>     submission
>     until the htmlized version and diff are available at tools.ietf.org
>     <http://tools.ietf.org>.
> 
>     The IETF Secretariat
> 
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> 

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