nanog mailing list archives

RE: nike.com->nike.com/ca


From: "Kain, Becki (.)" <bkain1 () ford com>
Date: Wed, 6 Jan 2021 22:36:27 +0000

And they want to charge me more for the same running shoes and duty, since they think I'm in Canada.  I mean, it's 
*right* there.  I can kayak to Canada but don't buy running shoes šŸ˜Š


-----Original Message-----
From: NANOG <nanog-bounces+bkain1=ford.com () nanog org> On Behalf Of Christopher Morrow
Sent: Wednesday, January 06, 2021 5:00 PM
To: William Herrin <bill () herrin us>
Cc: nanog () nanog org
Subject: Re: nike.com->nike.com/ca

On Wed, Jan 6, 2021 at 4:52 PM William Herrin <bill () herrin us> wrote:

On Wed, Jan 6, 2021 at 1:48 PM William Herrin <bill () herrin us> wrote:
On Wed, Jan 6, 2021 at 1:42 PM Kain, Becki (.) <bkain1 () ford com> wrote:
At home, using 8.8.8.8, if I goto 
https://clicktime.symantec.com/3Uht9nQajoHJ8ns9Tk5znnb7Vc?u=www.ni
ke.com, I get rerouted to nike.com/ca. I cleared the dns cache 
(Iā€™m running Catalina macos) and rebooted just because.  Anyone 
else seen a weirdism on this?  thanks

Welcome to Why You Shouldn't Make Customer-Visible Decisions Based 
On DNS Resolver Geolocation or DNS Load Balancing Sucks 101.

Nike.com is geolocating the server IP address which requests the web 
site address. This isn't yours or 8.8.8.8 but instead some unicast 
IP address to which your 8.8.8.8 packet was routed. Possibly in Canada.
Nike appears to think so.

Though I'm probably talking out my tail since this is an HTTP redirect

quite possible' :) (you don't normally, but I think the HTTP thing is the 'gotcha')

which would know your originating IP address (unless you're knowingly 
or unknowingly using a proxy).

the flow here is PROBABLY:
  "some dns query which doesn't really matter" by client  "some http(s) connect to the server by the client (beki)"
 "server looks up 'client address' in a 'database of geo ip mapping'
and says; "you are in CA(nada) so... 302 /ca pls!"

good times! :)
(also, typical geo ip problems :( bummer!)


-Bill



--
Hire me! 
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F%2Fbill.herrin.us%2Fresume%2F

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