nanog mailing list archives
Re: Authoritative Resources for Public DNS Pinging
From: Mark Tinka <mark@tinka.africa>
Date: Sat, 12 Feb 2022 11:23:55 +0200
On 2/11/22 14:27, Mike Hammett wrote:
The device that caused this whole conversation has failover functionality. Both interfaces ping an FQDN (that resolves to 8.8.8.8 and 1.1.1.1, with the device only latching on to one of those). If any of those meet the failure threshold, that interface is taken out of the traffic flow.So because someone else built a device (without a meaningful configuration to set otherwise), 8.8.8.8 went down for ICMP, and thus Internet ports began flapping, despite the Internet as a whole working just fine.
Pretty amazing, isn't it? Mark.
Current thread:
- Re: Authoritative Resources for Public DNS Pinging, (continued)
- 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)
- Re: Authoritative Resources for Public DNS Pinging Mark Tinka (Feb 09)
- Re: Authoritative Resources for Public DNS Pinging Robert Kisteleki (Feb 09)