Site reliability engineer and former network engineer. Essays, project notes, and a small toolbox.https://ivanpanev.netenhttps://ivanpanev.net/blog/hello-worldhttps://ivanpanev.net/blog/hello-worldA personal site as a long-running engineering project: what it is for, what it deliberately is not, and how it is built.Wed, 16 Sep 2026 00:00:00 GMTmetasrehttps://ivanpanev.net/blog/subnetting-by-handhttps://ivanpanev.net/blog/subnetting-by-handCalculators are fine, but the arithmetic is small enough to keep in your head, and being able to do it changes how you read a routing table.Thu, 10 Sep 2026 00:00:00 GMTnetworkingipv4ipv6