In article <CAHBU6isQNkE0tmsn7v41Vptgf2OCTQ61gwMKDN4hmK4pBY-J9w@xxxxxxxxxxxxxx> you write: >-=-=-=-=-=- > >See https://twitter.com/dave_universetf/status/1342685822286360576 to which >I heartily concur. IPV6 addresses are neither easy for humans to read, nor >easy for software to parse. I don't understand what the point of that tweet stream is. Yes, there was a lot of funky code in 4BSD thirty-five years ago, including in the IP address parsers. But so what? As Victor said, these days every actual IP address you will encounter is in a handful of familiar forms. Parsing them is not hard or slow. I wrote a version of grepcidr that matches all of the modern forms of v4 and v6 addresses with a state machine that looks at each character once and doesn't back up. It's plenty fast. R's, John PS: https://www.taugh.com/grepcidr-2/
