oh, my "Yes, The Book of PF, 4th Edition Is Coming Soon" blog post https://bsdly.blogspot.com/2025/07/yes-book-of-pf-4th-edition-is-coming.html is on hackernews: https://news.ycombinator.com/item?id=44657803#bookofpf #pf #packetfilter #openbsd #freebsd #networking (non-tracked: https://nxdomain.no/~peter/yes_the_book_of_pf_4th_ed_is_coming.html)