Thanks for the clarification Mark,

Rick


> -----Original Message-----
> From: Mark Andrews [mailto:ma...@isc.org]
> Sent: 27 June 2024 00:03
> To: Rick Taylor
> Cc: Scott Johnson; Erik Kline; dnsop; sburleig...@gmail.com; d...@ietf.org
> Subject: Re: [DNSOP] [dtn] Re: Re: IPN and CLA RRTYPEs to support Bundle
> Protocol RFC9171
> 
> 
> 
> > On 27 Jun 2024, at 03:11, Rick Taylor <r...@tropicalstormsoftware.com>
> wrote:
> >
> > Hi Scott,
> >
> > Thanks for the updated doc.   I've been thinking through what I understand 
> > is
> your use-case, and I wonder whether new RRTYPEs is really the right way to go.
> As I see it, the less one has to update the DNS infrastructure of the 
> Internet the
> better, so would this alternative mechanism work for you?:
> 
> Adding a new RRTYPE requires zero infrastructure upgrades.  It’s a database
> entry at IANA.  Every DNS server on the planet should handle these
> transparently.  That was required by RFC 1034 and RFC 1035.  You can even
> add them to zones before the parsing software is updated using unknown type
> representation (RFC 3597) which was one thing that was missing from RFC
> 1035 that would have made adding new types easier.  Nameservers and stub
> resolvers were always required to treat unknown records as opaque objects.
> 
> This doesn’t mean that there weren’t mis-implementations of the standards
> which failed to handle unknown types correctly but there have been 78 types
> added since RFC 1034 and RFC 1035.  That’s 2-3 per year.  Nameserver
> developers know how to add new record types quickly.
> 
> Mark
> --
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742              INTERNET: ma...@isc.org

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