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> Test Virtual Hosts, Avoid DNS

> With cURL just point the request at your host’s IP address

It's not even necessary to manually look up the IP, since options have precedence:

  curl server1.example.com -H Host:\ www.example.net
looks up server1.example.com and connects to that IP with the given Host: Header. Just try the "-v" option to see what's going on.

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