[outages] Packet loss to 4.2.2.2

[Scott Berkman]

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 at outages.org [mailto:outages-bounces at outages.org] On
Behalf Of Jay Ashworth
Sent: Wednesday, September 12, 2012 6:21 PM
To: outages at outages.org
Subject: Re: [outages] Packet loss to 4.2.2.2

----- Original Message -----
> From: "Josh Luthman" <josh at 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 at 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
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