Re: [Doh] [Ext] DNS Camel thoughts: TC and message size
Tony Finch <dot@dotat.at> Fri, 08 June 2018 13:27 UTC
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Date: Fri, 08 Jun 2018 14:26:53 +0100
From: Tony Finch <dot@dotat.at>
To: Mukund Sivaraman <muks@mukund.org>
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Subject: Re: [Doh] [Ext] DNS Camel thoughts: TC and message size
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Mukund Sivaraman <muks@mukund.org> wrote: > > I think BIND will happily load, zone transfer (in and out) and store an > RRset in memory that didn't fit in 64kB. Initially for catalog zones, > we'd have used such an RRset as there's no 64kB transfer limit to an > RRset. However, anything over 64kB cannot be queried for as the server > will fail to construct a reply. BIND handles this better than I feared it might :-) See first dig output below - you can axfr the zone if you want. However other implementations did not have as much foresight - the second dig output is from a name server hosted on the CommunityDNS anycast service - it seems to have transfered the zone OK, though. 1. BIND ; <<>> DiG 9.13.0 <<>> +tcp +norec 65536.dotat.at in txt @grey.dotat.at ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52562 ;; flags: qr aa tc; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ; COOKIE: e70d27f85d21dee83f06c6445b1a828aed3ce0f8f53f262d (good) ;; QUESTION SECTION: ;65536.dotat.at. IN TXT ;; Query time: 0 msec ;; SERVER: 2001:630:212:110::d:7a7#53(2001:630:212:110::d:7a7) ;; WHEN: Fri Jun 08 14:20:10 BST 2018 ;; MSG SIZE rcvd: 71 2. CommunityDNS ;; Warning: Message parser reports malformed message packet. ; <<>> DiG 9.13.0 <<>> +tcp +norec 65536.dotat.at in txt @ns3.gratisdns.dk ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52381 ;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: Message has 2571 extra bytes at end ;; QUESTION SECTION: ;65536.dotat.at. IN TXT ;; Query time: 24 msec ;; SERVER: 2001:678:5::6#53(2001:678:5::6) ;; WHEN: Fri Jun 08 14:21:10 BST 2018 ;; MSG SIZE rcvd: 2615 Tony. -- f.anthony.n.finch <dot@dotat.at> http://dotat.at/ Malin, South Hebrides: Cyclonic 3 or 4. Moderate, occasionally slight later. Fair then thundery showers. Good occasionally poor.
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- Re: [Doh] [Ext] Are we missing an architecture? (… Mukund Sivaraman
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- Re: [Doh] [Ext] Are we missing an architecture? (… Dave Lawrence
- Re: [Doh] [Ext] Are we missing an architecture? (… Paul Hoffman
- Re: [Doh] [Ext] Are we missing an architecture? (… Tom Pusateri
- [Doh] DNS Camel thoughts: TC and message size bert hubert
- Re: [Doh] DNS Camel thoughts: TC and message size Petr Špaček
- Re: [Doh] DNS Camel thoughts: TC and message size Tony Finch
- Re: [Doh] DNS Camel thoughts: TC and message size Hewitt, Rory
- Re: [Doh] DNS Camel thoughts: TC and message size Benno Overeinder
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- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Andrew Sullivan
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… George Michaelson
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- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Patrick McManus
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Tony Finch
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… bert hubert
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Paul Hoffman
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Martin J. Dürst
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- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Paul Hoffman
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Tony Finch
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Dave Lawrence
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Dave Lawrence
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Patrick McManus
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Ray Bellis
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Ray Bellis
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- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Dave Lawrence
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Robert Edmonds
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Dave Lawrence
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Dave Lawrence
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Mateusz Jończyk
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- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Ray Bellis
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Mukund Sivaraman
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Mukund Sivaraman
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Patrick McManus
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Tony Finch
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Martin Thomson
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Mark Nottingham
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- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Ólafur Guðmundsson
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- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Dave Lawrence
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Andrew Sullivan
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… bert hubert
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Dave Lawrence
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Patrick McManus
- Re: [Doh] Are we missing an architecture? (was Re… Mark Nottingham
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Mukund Sivaraman
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Dave Lawrence
- Re: [Doh] Are we missing an architecture? (was Re… Andrew Sullivan
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Andrew Sullivan
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Patrick McManus
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Andrew Sullivan
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Patrick McManus
- Re: [Doh] [Ext] DNS Camel thoughts: TC and messag… Dave Lawrence
- Re: [Doh] Are we missing an architecture? (was Re… Dave Lawrence
- Re: [Doh] Are we missing an architecture? (was Re… bert hubert
- Re: [Doh] Are we missing an architecture? (was Re… Dave Lawrence
- Re: [Doh] [Ext] Are we missing an architecture? (… Ray Bellis