When running a traceroute line quality check, http://www.dslreports.com/linequality), my line quality test results came back good (pass), yet on the traceroute host list I show a host titled "???" that is one hop before my IP that shows 100% loss. 100% loss should fail the test shouldn't it? Using another trace I can see that this unknown IP is 192.168.33.166, which I thought was a private local designation, yet I am not using this IP on my equipment. Please advise.