Re: [DNSOP] New draft for ALIAS/ANAME type
"John Levine" <johnl@taugh.com> Thu, 30 March 2017 23:08 UTC
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Date: Thu, 30 Mar 2017 23:08:06 -0000
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From: John Levine <johnl@taugh.com>
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Cc: rharolde@umich.edu
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Subject: Re: [DNSOP] New draft for ALIAS/ANAME type
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>If you sign offline, what happens when the A records change? You Lose(tm). For that matter, you lose even when the A records don't change since the signer only sees the ANAME, not the A or AAAA. I did an ANAME like feature in my DNS system, entirely on the provisioning side. It does offline signing, zones are constructed by the provisioning software, expanding the anames, then signed, then given to the master server, NSD in my case. It remembers which zones have anames and rechecks them every hour, redoing the zone's expansion and signing if they've changed. This lets me do things that regular ANAME can't, in particular shadowing data from a server that is not authoritative for the zone. My users often host their web sites at hosting providers that insist you use their name servers, except that they don't provide usable mail so I have to do the mail and DNS. On my server, the aname-like things can specify what server to query as well as what name, so it automatically follows the A and AAAA records that the web host publishes in their DNS. My objection to ANAME is more or less the same as it is to BULK, even though ANAME is vastly less complex. It requires that an authoritative server include a recursive client and do online signing, both of which would be rather large additions to the mandatory set of server features. I think it'd be fine to reserve ANAME as a pseudo-rrtype so that people can do the name following magic consistently in their provisioning software, but I wouldn't want to put it into DNS servers. R's, John
- [DNSOP] New draft for ALIAS/ANAME type Anthony Eden
- Re: [DNSOP] New draft for ALIAS/ANAME type Pieter Lexis
- Re: [DNSOP] New draft for ALIAS/ANAME type Tony Finch
- Re: [DNSOP] New draft for ALIAS/ANAME type Anthony Eden
- Re: [DNSOP] New draft for ALIAS/ANAME type Bob Harold
- Re: [DNSOP] New draft for ALIAS/ANAME type Ólafur Guðmundsson
- Re: [DNSOP] New draft for ALIAS/ANAME type Richard Gibson
- Re: [DNSOP] New draft for ALIAS/ANAME type John Levine
- Re: [DNSOP] New draft for ALIAS/ANAME type Evan Hunt
- Re: [DNSOP] New draft for ALIAS/ANAME type tjw ietf
- Re: [DNSOP] New draft for ALIAS/ANAME type Tony Finch
- Re: [DNSOP] New draft for ALIAS/ANAME type Peter van Dijk
- Re: [DNSOP] New draft for ALIAS/ANAME type Peter van Dijk
- Re: [DNSOP] New draft for ALIAS/ANAME type John Levine
- Re: [DNSOP] New draft for ALIAS/ANAME type Tim Wicinski
- Re: [DNSOP] New draft for ALIAS/ANAME type Mark Andrews
- Re: [DNSOP] New draft for ALIAS/ANAME type Peter van Dijk
- Re: [DNSOP] New draft for ALIAS/ANAME type John R Levine
- Re: [DNSOP] New draft for ALIAS/ANAME type Tony Finch
- Re: [DNSOP] New draft for ALIAS/ANAME type Tony Finch
- Re: [DNSOP] New draft for ALIAS/ANAME type John Levine
- Re: [DNSOP] New draft for ALIAS/ANAME type Dan York
- Re: [DNSOP] New draft for ALIAS/ANAME type Paul Wouters
- Re: [DNSOP] New draft for ALIAS/ANAME type Peter van Dijk
- [DNSOP] the power of ideas Paul Vixie
- Re: [DNSOP] the power of ideas Dave Crocker
- Re: [DNSOP] New draft for ALIAS/ANAME type Evan Hunt
- Re: [DNSOP] New draft for ALIAS/ANAME type Paul Wouters
- Re: [DNSOP] [Ext] the power of ideas Edward Lewis
- Re: [DNSOP] [Ext] the power of ideas Paul Vixie
- Re: [DNSOP] New draft for ALIAS/ANAME type Matthew Pounsett
- Re: [DNSOP] New draft for ALIAS/ANAME type Tony Finch
- Re: [DNSOP] New draft for ALIAS/ANAME type Matthew Pounsett
- Re: [DNSOP] New draft for ALIAS/ANAME type Petr Špaček
- Re: [DNSOP] New draft for ALIAS/ANAME type Bryan Hughes