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)

"John Levine" <johnl@taugh.com> Tue, 21 July 2015 22:25 UTC

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Date: Tue, 21 Jul 2015 22:24:43 -0000
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From: John Levine <johnl@taugh.com>
To: 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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>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