More importantly, unless something has changed in the past year or so Level 3 has always stated that the 4.2.2.X (yes there are others like .1 - .6) DNS severs are NOT production level systems and they will not provide any support for them. A good piece of evidence to this is that they don't charge for their use and Level 3 doesn't give much of anything away for free. If this is wrong and someone from Level3 wants to speak to it, I'd be happy to stand corrected. Sometimes a forum like NANOG is an appropriate place to mention that there is a possible issue (you can find this in the achieves), but I'm pretty sure that either way this would not qualify as an "outage". If you are using 4.2.2.X for DNS resolution for anything in production in any way other than as a last resort, I feel sorry for your customers. We all like to use it for testing because it's easy to remember and generally reliable, but I always do so with caution. -Scott -----Original Message----- From: outages-bounces@outages.org [mailto:outages-bounces@outages.org] On Behalf Of Jay Ashworth Sent: Wednesday, September 12, 2012 6:21 PM To: outages@outages.org Subject: Re: [outages] Packet loss to 4.2.2.2 ----- Original Message -----
From: "Josh Luthman" <josh@imaginenetworksllc.com>
Can you share from/to? I was told 4.2.2.2 is anycast (or otherwise geographically diverse), though I have no proof of that.
4.2.2.x are *authoritatively* multicast; I have that from someone who is involved in running recursive DNS for whatever the hell they're calling themselves this year. :-) In other news: not all 6 of those servers will always respond to ping traffic even if they're resolving; it's random; presumably they don't want anyone to get too settled into using them as a ping beacon to watching the weather on the 'net. Understandably. Cheers, -- jra -- Jay R. Ashworth Baylink jra@baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA #natog +1 727 647 1274 _______________________________________________ Outages mailing list Outages@outages.org https://puck.nether.net/mailman/listinfo/outages