nanog mailing list archives
Re: Intermittent incorrect DNS resolution?
From: William Herrin <bill () herrin us>
Date: Wed, 16 Jan 2013 17:34:38 -0500
On Wed, Jan 16, 2013 at 5:00 PM, Erik Levinson <erik.levinson () uberflip com> wrote:
I suspect that somewhere, one of their servers has the wrong data, or some resolver is misbehaving, but based on the pattern/traffic/volume/randomization of hostnames, the resolver theory is less likely. I haven't analyzed the source IPs yet to see if they're in a particular set of countries.
Hi Erik, Look up "DNS pinning." I can't rule out the possibility of a faulty DNS server but it's far more likely your customers' web browsers are simply ignoring the DNS TTL. Malfunctioning as designed. If you keep it live, you'll notice a falling trickle of traffic to the old address for the next year or so. Regards, Bill Herrin -- William D. Herrin ................ herrin () dirtside com bill () herrin us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004
Current thread:
- Re: Intermittent incorrect DNS resolution?, (continued)
- Re: Intermittent incorrect DNS resolution? Erik Levinson (Jan 16)
- Re: Intermittent incorrect DNS resolution? Christopher Morrow (Jan 16)
- Re: Intermittent incorrect DNS resolution? Erik Levinson (Jan 16)
- Re: Intermittent incorrect DNS resolution? Christopher Morrow (Jan 16)
- Re: Intermittent incorrect DNS resolution? Erik Levinson (Jan 16)
- Re: Intermittent incorrect DNS resolution? Joe Abley (Jan 16)
- Re: Intermittent incorrect DNS resolution? Erik Levinson (Jan 16)
- Re: Intermittent incorrect DNS resolution? Damian Menscher (Jan 17)
- Re: Intermittent incorrect DNS resolution? Erik Levinson (Jan 17)
- Re: Intermittent incorrect DNS resolution? Erik Levinson (Jan 17)
- Re: Intermittent incorrect DNS resolution? Erik Levinson (Jan 16)
- Re: Intermittent incorrect DNS resolution? Robert Bonomi (Jan 16)
- Re: Intermittent incorrect DNS resolution? Vinny Abello (Jan 18)
- RE: Intermittent incorrect DNS resolution? Keith Medcalf (Jan 19)
- Re: Intermittent incorrect DNS resolution? Vinny Abello (Jan 20)
- Re: Intermittent incorrect DNS resolution? Jay Ashworth (Jan 18)
- Re: Intermittent incorrect DNS resolution? Vinny Abello (Jan 18)
- Re: Intermittent incorrect DNS resolution? Andrei Ivanov (Jan 18)