Re: [DNSOP] [homenet] ip6.arpa reverse delegation

Markus Stenberg <markus.stenberg@iki.fi> Mon, 24 November 2014 09:47 UTC

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From: Markus Stenberg <markus.stenberg@iki.fi>
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Date: Mon, 24 Nov 2014 11:47:08 +0200
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To: Michael Richardson <mcr+ietf@sandelman.ca>
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Cc: homenet@ietf.org, Markus Stenberg <markus.stenberg@iki.fi>, dnsop@ietf.org
Subject: Re: [DNSOP] [homenet] ip6.arpa reverse delegation
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On 23.11.2014, at 23.14, Michael Richardson <mcr+ietf@sandelman.ca> wrote:
> I have read:
>  Automated Delegation of IP6.ARPA reverse zones with Prefix Delegation
>  draft-andrews-dnsop-pd-reverse-02
> 
> as a method to delegate reverse zones to CPE devices as the prefix
> is delegated.  I find the method entirely sensible, and I think highly
> secure.  I don't know if this belongs in dnsop or in homenet (or dhcpv6,
> since a new DHCPv6 option is requested, and this enhances DHCPv6-PD): I'll
> let the INT and Ops ADs sort that out.

Is this actually desired by the operators? At least here (.fi), ISPs seem to consider the reverse pointing to x.customer.y.isp.fi a feature, not a bug, of the current IPv4 deployment and specified same for future IPv6 deployments as well. (At the moment my ISP does not officially support IPv6, but do provide it via 6rd, and I get NXDOMAIN for reverses, but v4 is populated for more or less all ISPs.)

> I suggest that one of these WGs should adopt it, and even suggest that this
> document should Updates: 6204/7084.  If I had the required code point, I
> would implement it today in an IPv6 ACS I work on (ServPOET), and contribute
> code to Barrier Breaker OpenWRT (to dnsmasq) to do the client end.

odhcp6c is the DHCPv6 client there, so some (slightly awkward) integration between dnsmasq/odhcp6c would be implied..

(dnsmasq is relatively statically configured no-IPC daemon, so I suppose odhcp6c could provide it with some sort of config file fragment which provides the information from step 2 in the draft to dnsmasq..)

Cheers,

-Markus