Revert "Add routing IPv6 routing test address by loopback interface."
Revert "Add routing IPv6 routing test address by loopback interface."

This reverts commit dd1a50b0b573713c49692254c5fc20a9198f4c0c.

wackerly/faucet,mwutzke/faucet,mwutzke/faucet,faucetsdn/faucet,gizmoguy/faucet,trungdtbk/faucet,faucetsdn/faucet,REANNZ/faucet,REANNZ/faucet,anarkiwi/faucet,anarkiwi/faucet,gizmoguy/faucet,shivarammysore/faucet,wackerly/faucet,shivarammysore/faucet,trentindav/faucet,trungdtbk/faucet,trentindav/faucet