Problem with test

[Andrea Del Bene]

I've noticed that test method 
testExtractFromContainerRequestUnknownXForwardedFor inside 
WebClientInfoTest randomly fails. In short it seems that sometimes 
InetAddress.getByName (inide WebClientInfo, line 148) returns a valid ip 
for 'unknown'. Has anybody experienced this problem? Could be related to 
my local network settings?