Re: [DNSOP] Benjamin Kaduk's No Objection on draft-ietf-dnsop-rfc2845bis-07: (with COMMENT)
Mark Andrews <marka@isc.org> Thu, 19 March 2020 05:03 UTC
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From: Mark Andrews <marka@isc.org>
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Date: Thu, 19 Mar 2020 16:03:08 +1100
Cc: The IESG <iesg@ietf.org>, dnsop-chairs@ietf.org, dnsop@ietf.org, draft-ietf-dnsop-rfc2845bis@ietf.org, benno@NLnetLabs.nl
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To: Benjamin Kaduk <kaduk@mit.edu>
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Subject: Re: [DNSOP] Benjamin Kaduk's No Objection on draft-ietf-dnsop-rfc2845bis-07: (with COMMENT)
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> On 19 Mar 2020, at 15:03, Benjamin Kaduk via Datatracker <noreply@ietf.org> wrote: > > * Other Len - an unsigned 16-bit integer specifying the length > of the "Other Data" field in octets. > > * Other Data - this unsigned 48-bit integer field will be > empty unless the content of the Error field is BADTIME, in > which case it will contain the server's current time as the > number of seconds since 00:00 on 1970-01-01 UTC, ignoring > leap seconds (see Section 5.2.3). > > I'm slightly confused at the interplay between the explicit length field > and the "empty unless" directive. Does this mean that the only allowed > values in the "Other Len" are 0 and 6? Does "empty" mean "length-zero”? The only current use of this field is to pass the time which is 48 bits. Potential future use is covered in draft-andrews-dnsop-defeat-frag-attack-00 to provide a transaction nonce. -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@isc.org
- [DNSOP] Benjamin Kaduk's No Objection on draft-ie… Benjamin Kaduk via Datatracker
- Re: [DNSOP] Benjamin Kaduk's No Objection on draf… Mark Andrews