Hacker News with Generative AI: IPv4

Fun with IP address parsing (2020) (dave.tf)
In my quest to write a fast IPv4+6 parser, I wrote a slow-but-I-think-correct parser, to use as a base of comparison. In doing so, I discovered more cursed IP address representations that I was previously unaware of. Let’s explore together!
CGNAT frustrates all IP address-based technologies (2019) (sidn.nl)
CGNAT is a godsend for all internet access providers who have no IPv4 addresses left to assign to customers. At the same time, it's a serious impediment for police services and security tools. Whereas it was once possible to assume that an IP address was linked to a single customer, it can now be linked to thousands. As a result, many IP-based technologies and approaches no longer work properly.
IPv6 may already be irrelevant – but so is moving off IPv4 (theregister.com)
The chief scientist of the Asia Pacific Network Information Center has a theory about why the world hasn't moved to IPv6.
Show HN: A Short IPv6 Guide for Home IPv4 Admins (github.com)
Reclaiming IPv4 Class E's 240.0.0.0/4 (benjojo.co.uk)
It's cheaper to buy ($33) than rent ($44/year) IPv4s from AWS (twitter.com)
Fastest way to get IPv4 address from string (2015) (stackoverflow.com)