Andrew Kyle Purtell created HBASE-23161:

             Summary: Invalid hostname tests can fail if the ISP hijacks 
                 Key: HBASE-23161
             Project: HBase
          Issue Type: Bug
            Reporter: Andrew Kyle Purtell

Some residential internet service providers use the opportunity of DNS record 
not found cases and instead of returning NXDOMAIN responses per the standard 
they return A records that redirect the user to their own portal or search 
page. This breaks tests like 
TestConnectionImplementation.testGetClientBadHostname and 
TestRegionServerHostname.testInvalidRegionServerHostnameAbortsServer. We should 
detect this behavior and skip these cases.

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