Specifying that an IP address should match subdomains doesn't make sense. This test verifies that it doesn't do anything.

Testing: http://127.0.0.1:8000/xmlhttprequest/resources/get.txt (sync)
FAIL: Error: NETWORK_ERR: XMLHttpRequest Exception 101
Testing: http://127.0.0.1:8000/xmlhttprequest/resources/get.txt (async)
FAIL: 0

