Re: [DNSOP] my lone hum against draft-wkumari-dnsop-multiple-responses
"Peter van Dijk" <peter.van.dijk@powerdns.com> Wed, 20 July 2016 12:39 UTC
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From: Peter van Dijk <peter.van.dijk@powerdns.com>
To: IETF dnsop WG <dnsop@ietf.org>
Date: Wed, 20 Jul 2016 14:39:04 +0200
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Subject: Re: [DNSOP] my lone hum against draft-wkumari-dnsop-multiple-responses
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Jim, On 20 Jul 2016, at 9:18, Jim Reid wrote: > It's a bit of a stretch to call that a suggestion and a far bigger one > to claim cookies and/or TCP as a necessary precondition. There's no > language like "clients and servers SHOULD (MUST?) use DNS > cookies/TCP/DNSoverTLS for EXTRA queries and responses". Well, not yet > anyway. Maybe in the next release. > > And if DNS over TLS is the answer, the overheads of that handshake > would more than cancel out the benefit of optimising away an extra > query/response RTT. > > FWIW, I think it's a Bad Idea and the start of a very slippery slope > to make queries or responses to QTYPEs dependent on the underlying > transport protocol (modulo AXFR of course). Are layering violations > acceptable nowadays? +lots, I see mentions of TCP and/or cookies popping up in more and more drafts and it has to stop. Packet size concerns exist for every usage of DNS, and new features should not pretend they are so special that they deserve special treatment in this regard. Such decisions are operational and they don’t belong in every draft that makes packets slightly bigger. Of course, when it’s obvious we need TCP-like semantics, like in the session draft for dnssd push, that’s fine. Kind regards, -- Peter van Dijk PowerDNS.COM BV - https://www.powerdns.com/
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Ted Lemon
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Bob Harold
- Re: [DNSOP] Asking for TCP and/or cookies: a tren… Mukund Sivaraman
- Re: [DNSOP] Asking for TCP and/or cookies: a tren… Mukund Sivaraman
- Re: [DNSOP] Asking for TCP and/or cookies: a tren… Stephane Bortzmeyer
- Re: [DNSOP] Asking for TCP and/or cookies: a tren… Paul Wouters
- Re: [DNSOP] Asking for TCP and/or cookies: a tren… Mukund Sivaraman
- Re: [DNSOP] Asking for TCP and/or cookies: a tren… Paul Wouters
- [DNSOP] Asking for TCP and/or cookies: a trend? (… Stephane Bortzmeyer
- Re: [DNSOP] my lone hum against draft-wkumari-dns… 延志伟
- Re: [DNSOP] my lone hum against draft-wkumari-dns… 延志伟
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Ralf Weber
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Peter van Dijk
- Re: [DNSOP] my lone hum against draft-wkumari-dns… 延志伟
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Jim Reid
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Mark Andrews
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Jim Reid
- Re: [DNSOP] my lone hum against draft-wkumari-dns… 延志伟
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Mark Andrews
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Ralf Weber
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Ted Lemon
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Ralf Weber
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Matthew Pounsett
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Ted Lemon
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Matthew Pounsett
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Ralf Weber
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Christopher Morrow
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Ralf Weber
- Re: [DNSOP] my lone hum against draft-wkumari-dns… George Michaelson
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Robert Edmonds
- [DNSOP] my lone hum against draft-wkumari-dnsop-m… Paul Wouters
- Re: [DNSOP] my lone hum against draft-wkumari-dns… Ralf Weber