https://tools.ietf.org/html/draft-west-let-localhost-be-localhost-02

Abstract

   This document updates RFC6761 by requiring that the domain
   "localhost." and any names falling within ".localhost." resolve to
   loopback addresses.  This would allow other specifications to join
   regular users in drawing the common-sense conclusions that
   "localhost" means "localhost", and doesn't resolve to somewhere else
   on the network.

Wow.

F'in Networks - how do they work?

F’in networks – how do they work?