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

[up () 3 am]

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.

On Fri, 31 Jul 2009, up () 3 am wrote:

> Disregard my disregard.  The problem resurfaced with no changes on my part. 
> I purged browser caches and tried them from 3 browsers and each time:
>
> http://www.countytheater.org
>
> redirected to:  http://webmail.ns3.pil.net/ which is another NameVhost on 
> that server sharing that IP.  This is incorrect.  However, I then switch from 
> a Verizon connection to an ATT 3g connection on the IPhone and the problem 
> goes away.
>
> Has anyone heard of upstream transparent caching issues causing this kind of 
> problem?  Does anyone else here get the redirect instead of the correct page?
>
> TIA
>
> On Fri, 31 Jul 2009, up () 3 am wrote:
>
> > Please disregard this idiocy of mine...it appears that the Apache 
> > UseCanonicalName directive selectively breaks some NameVirtualHosts, while 
> > leaving others unscathed, but turning it off fixed it anyway.
> >
> > On Fri, 31 Jul 2009, up () 3 am wrote:
> >
> > > Sorry if this is a little OT, but we're seeing a serious problem and was 
> > > wondering if it is what I think it is.
> > >
> > > In short: I have been moving services off of our servers in a data center 
> > > onto a server at eSecuredata, who rents dedicated servers.  The idea is to 
> > > lower costs and eliminate having to deal with hardware.
> > >
> > > The advertise "unmetered bandwidth", but mention QoS measure to control 
> > > "bandwidth hogs".
> > >
> > > One of my customers, whose site I just moved from a unique IP virtual host 
> > > on my old server onto an Apache NameVirtualHost on the new one, worked 
> > > fine at first.  Then today, they started complaining about getting one of 
> > > our home pages.  I figured DNS or web caching issues, until I started 
> > > seeing it for myself.  It was no caching issue, it was NameVirtualHost 
> > > breaking.
> > >
> > > I poured over my configs (I've done this config countless times), and saw 
> > > this in the apache docs:
> > >
> > > http://httpd.apache.org/docs/2.2/vhosts/name-based.html
> > >
> > > " Some operating systems and network equipment implement bandwidth 
> > > management techniques that cannot differentiate between hosts unless they 
> > > are on separate IP addresses."
> > >
> > > So, I installed lynx on the server, and sure enough, it worked perfectly 
> > > fine there, just not from anywhere outside eSecuredata's network that I 
> > > could see.
> > >
> > > Can anyone shed any light on this particular practice, of this company in 
> > > particular?
> > >
> > > thanks
> > >
> > > James Smallacombe                     PlantageNet, Inc. CEO and Janitor
> > > up () 3 am http://3.am
> > > =========================================================================
> >
> > James Smallacombe                     PlantageNet, Inc. CEO and Janitor
> > up () 3 am 
> > http://3.am
> > =========================================================================
>
> James Smallacombe                     PlantageNet, Inc. CEO and Janitor
> up () 3 am                                                          http://3.am
> =========================================================================

James Smallacombe                     PlantageNet, Inc. CEO and Janitor
up () 3 am                                                          http://3.am
=========================================================================