[baudehlo]

Try 127.0.0.254 then.

[pwdisswordfish]

Or 0.0.0.1, and spare yourself the spurious loopback traffic.

[yjftsjthsd-h]

Is 0.0.0.0/8 unused or something?

[userbinator]

http://tools.ietf.org/html/rfc5735#page-6

It's known as "This" Network.