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Re: Weakness of DNS classes (was Re: Last Call: <draft-ietf-dnsop-onion-tld-00.txt> (The .onion Special-Use Domain Name) to Proposed Standard)

David Morris <dwm@xpasc.com> Tue, 21 July 2015 23:17 UTC

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Date: Tue, 21 Jul 2015 16:17:13 -0700
From: David Morris <dwm@xpasc.com>
cc: ietf@ietf.org
Subject: Re: Weakness of DNS classes (was Re: Last Call: <draft-ietf-dnsop-onion-tld-00.txt> (The .onion Special-Use Domain Name) to Proposed Standard)
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OR, class independence is specified such that it doesn't match.

On Tue, 21 Jul 2015, John Levine wrote:

> >It turns out that aliases are defined as class-independent.
>
> Oh, it's worse than that.
>
> $ fgrep -i "class independent" rfc????.txt
> rfc3845.txt:   The NSEC RR RDATA format is class independent and defined for all
> rfc4025.txt:   This resource record [IPSECKEY] is class independent.
> rfc4034.txt:   The DNSKEY RR is class independent.
> rfc4034.txt:   The RRSIG RR is class independent.
> rfc4034.txt:   The NSEC RR is class independent.
> rfc4034.txt:   The DS resource record is class independent.
> rfc5155.txt:   The NSEC3 RR RDATA format is class independent and is described
> rfc5155.txt:   The NSEC3PARAM RR RDATA format is class independent and is described
> rfc6698.txt:   The TLSA RR is class independent.
> rfc6742.txt:   The NID RR is class independent.
> rfc6742.txt:   The L32 RR is class independent.
> rfc6742.txt:   The L64 RR is class independent.
> rfc6742.txt:   The LP RR is class independent.
> rfc7043.txt:   The EUI48 RR is class independent.
> rfc7043.txt:   The EUI64 RR is class independent.
> rfc7553.txt:   The URI resource record is class independent.
>
> I think this means that all of the other RR's are only valid in class
> IN, but I don't really know.
>
> R's,
> John
>

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