Fun with IP address parsing.

Fun fact, the textual representation of IPv4 was never standardized in any document before IPv6 needed a grammar for its weirdo “trailing dotted quad” notation. So, it’s a de-facto standard that boils down to mostly “what did 4.2BSD understand?”, and “what did other OSes keep when they copied 4.2BSD?”

Relevant: http‎://1482903631.