Adds support for Floating IP

Interesting... I thought the 404 fallback handler only returns null on a 404 and an exception on all other error codes. I have not had a chance to test this today though.

I agree that returning a null in this situation could be confusing though, especially considering usually you have to look at logs to figure out what happened.

Also I have seen 404 service error codes where the error message was about validation instead of missing resource!