nanog mailing list archives
Re: Authoritative Resources for Public DNS Pinging
From: Grant Taylor via NANOG <nanog () nanog org>
Date: Fri, 11 Feb 2022 09:35:23 -0700
On 2/11/22 7:58 AM, Jon Lewis wrote:
8.8.8.8 is already anycasted. What if each large ISP (for whatever definition of large floats your boat) setup their own internal instance(s) of 8.8.8.8 with a caching DNS server listening, and handled the traffic without bothering GOOG?
I've pontificated doing this. On one hand I think it's a neat technical solution. On the other hand I think how ... displeased I would be if someone were to anycast one of my services without my knowledge, much less consent for them to do so. Thus I've never done it where I had a choice.
I believe that anycasting resources from another organization /without/ their consent is a hard fail and non-starter. Independent of how pure the intentions are.
For users using 8.8.8.8 as a lighthouse, this would change the meaning of their test...i.e. a response means their connection to their ISP is up, and the ISP's network works at least enough to reach an internal 8.8.8.8, but the question of their connectivity to the rest of the Internet would be unanswered.
I say "where I had a choice" because I have anycasted 8.8.8.8 (for ICMP and DNS) in an offline lab ~> D.R. exercise environment /explicitly/ because other systems therein had been configured to test reach ability to 8.8.8.8 et al. Thus my hand was forced /inside/ the D.R. environment.
-- Grant. . . . unix || die
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Current thread:
- Re: Authoritative Resources for Public DNS Pinging, (continued)
- Re: Authoritative Resources for Public DNS Pinging Lady Benjamin Cannon of Glencoe (Feb 10)
- Re: Authoritative Resources for Public DNS Pinging Tom Beecher (Feb 10)
- Re: Authoritative Resources for Public DNS Pinging Mark Tinka (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging Tom Beecher (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging james.cutler () consultant com (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging Tom Beecher (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging J. Hellenthal via NANOG (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging Mark Tinka (Feb 12)
- Re: Authoritative Resources for Public DNS Pinging Jon Lewis (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging Joe Greco (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging Grant Taylor via NANOG (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging Mark Tinka (Feb 12)
- Re: Authoritative Resources for Public DNS Pinging Mike Hammett (Feb 11)
- Re: Authoritative Resources for Public DNS Pinging Mark Tinka (Feb 12)
- Re: Authoritative Resources for Public DNS Pinging Christopher Morrow (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Lady Benjamin Cannon of Glencoe (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Grant Taylor via NANOG (Feb 09)
- RE: Authoritative Resources for Public DNS Pinging Mike Lewinski via NANOG (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Josh Luthman (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Mike Hammett (Feb 10)
- RE: Authoritative Resources for Public DNS Pinging Brian Turnbow via NANOG (Feb 09)