https://lthibau.lt/Recent content on lthibau.ltHugo -- gohugo.ioen-usFri, 18 Nov 2022 09:09:10 -0500https://lthibau.lt/posts/random-cidr-iter/Fri, 18 Nov 2022 09:09:10 -0500https://lthibau.lt/posts/random-cidr-iter/I recently encountered a problem that seemed trivial on the surface, and turned out to be challenging enough to warrant a blog post: Given a subnet, iterate through its addresses in pseudorandom order. Naive Approach For small subnets like 10.8.1.0/24, the naive implementation works well. We enumerate each address and append it to a list, shuffle the list, and then range over the list. The first step is the only one I had to stop and think about, but it ended up being quite straightforward.