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Re: Verizon transparent web caching issue? WASRe: Data Center QoS equipment breaking http 1.1?


From: Nathan Ward <nanog () daork net>
Date: Sat, 1 Aug 2009 13:13:19 +1200

On 1/08/2009, at 1:06 PM, up () 3 am wrote:


Again, turned out to be my own stupidity. It was just DNS on a secondary DNS server, which was pointing to the old IP, which was redirecting to the new IP, but at that point, the headers are lost.

I would have thought that on MacOSX (my client; the server is FreeBSD 7.2-STABLE), if I tell the /etc/resolv.conf to look at the primary name server only, which has the correct info, plus doing a dnscacheutil -flushcache, that this wouldn't be an issue.

Apparently, I was wrong, or perhaps it doesn't override what Verizon does with my browser's queries, despite what nslookup shows in a terminal window.


As you are on OS X, have a read of 
http://developer.apple.com/documentation/Darwin/Reference/Manpages/man5/resolver.5.html

It lets you do per-domain resolvers, and so on.

--
Nathan Ward



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