Re: [dbound] NXDomain (was: Re: [dmarc-ietf] Fwd: New Version Notification for draft-dcrocker-dns-perimeter-00.txt)
Dave Crocker <dhc@dcrocker.net> Sat, 06 April 2019 21:15 UTC
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To: John Levine <johnl@taugh.com>, dbound@ietf.org
References: <20190406150918.9B9BC2011A23A4@ary.qy>
From: Dave Crocker <dhc@dcrocker.net>
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Organization: Brandenburg InternetWorking
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Date: Sat, 06 Apr 2019 14:14:51 -0700
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Subject: Re: [dbound] NXDomain (was: Re: [dmarc-ietf] Fwd: New Version Notification for draft-dcrocker-dns-perimeter-00.txt)
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On 4/6/2019 8:09 AM, John Levine wrote: > In article <acb079bc-53d4-780b-2f1c-98072159e7aa@dcrocker.net> you write: >> My understanding is that it's likely careful use of a resolver library >> can retrieve the Additional information. Some calls won't get it; >> others probably will. > > As I may have said one or two times before, this hack will require > changes to DNS servers to return additional information that they > don't return now, Since that statement is in the current draft, I'm not clear what insight is intended by your multiple repetitions of it here. > changes to DNS caches to store and pass through > additional information that they don't store or pass through now, and Oh? You are saying that caches do not cache an entire response. I did not find references that support that. Please document. > changes to DNS client libraries to retrieve the additional information > that they don't retrieve now. I will cheerfully bet any amount of > money that none of these changes ever happen. That does not match my understanding. My understanding from a knowledgeable source is: "APIs such as those in libresolv that deal in raw packets do tend to make the entire packet available. Others such as `getaddrinfo` do not." Since you appear to be claiming otherwise, please explain. Worse, I even found an RFC with multiple examples of Additional information in an NXDomain response: Negative Caching of DNS Queries (DNS NCACHE) https://tools.ietf.org/html/rfc2308 > Once again, please compare this proposal to my 2016 proposal that uses If you wish to do the work of a careful audit of the differences and similarities, and pursue a pointed review of the similarities and differences, perhaps that will facilitate conversation. It would certainly improve the tone. d/ d/ -- Dave Crocker Brandenburg InternetWorking bbiw.net
- [dbound] Fwd: New Version Notification for draft-… Dave Crocker
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… John R Levine
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… John Levine
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Dave Crocker
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Dave Crocker
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Jothan Frakes
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Dave Crocker
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… John R Levine
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… tjw ietf
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Stephen Farrell
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Jothan Frakes
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Stephen Farrell
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Dave Crocker
- [dbound] cross-posting (was Re: [dmarc-ietf] Fwd:… Dave Crocker
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… John R. Levine
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Dave Crocker
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Dave Crocker
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… John R. Levine
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Dave Crocker
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… John R. Levine
- Re: [dbound] [dmarc-ietf] Fwd: New Version Notifi… Dave Crocker
- Re: [dbound] department of poor memory, was Fwd: … John R. Levine
- Re: [dbound] department of poor memory, was Fwd: … Dave Crocker
- Re: [dbound] department of poor memory, was Fwd: … John Levine
- Re: [dbound] department of poor memory, was Fwd: … Jothan Frakes
- [dbound] NXDomain (was: Re: [dmarc-ietf] Fwd: New… Dave Crocker
- Re: [dbound] NXDomain (was: Re: [dmarc-ietf] Fwd:… John Levine
- Re: [dbound] NXDomain (was: Re: [dmarc-ietf] Fwd:… Dave Crocker