https://edge.3dynamix.uk/Practical intelligence on security, homelab and the tech worth your attention.https://edge.3dynamix.uk/networking/subnet-masks-and-cidr-a-practical-2026-reference/https://edge.3dynamix.uk/networking/subnet-masks-and-cidr-a-practical-2026-reference/IPv4/IPv6 subnetting cheat sheet with CIDR tables, VLSM walkthrough, Linux commands (ip, ipcalc, nmcli, Python), and a pre-commit checklist.Tue, 29 Sep 2026 00:00:00 -0000