My guess, and it's nothing more, is that they set the Host: header in the HTTP::Response to be either LocalHost or 127.0.0.1.

Worth a look.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". I knew I was on the right track :)
In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: Testing Dancer2 - simulating requests from different IP addresses by BrowserUk
in thread [Solved] Testing Dancer2 - simulating requests from different IP addresses by davies

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