Blog

// 01.11.2026 // Architecture

Subnetting Without the Binary Circus: How Prefixes and Network Boundaries Actually Work

Why hand-drawn binary tables are useless in daily ops: How the Linux kernel actually cuts network boundaries, why IPv4 enforces rigid powers of two, and how nibble boundaries make IPv6 painless.

#Networking #Subnetting #IPv4

~ 7 MIN Read article →

// 31.10.2026 // Architecture

940 Mbps in the Speedtest, 85 Million Dead Packets in the Cable: How a Network Decays Unnoticed

When construction crews dig through the soil and the ISP stone-walls: How TR-064 telemetry exposes real line health and forces regulatory action via the Federal Network Agency.

#DOCSIS #Broadband #Networking

~ 9 MIN Read article →

// 03.10.2026 // Linux

When the CPU Loses Its Memory: Linux on Apple M4

From silent serial consoles and assembly debugging to processors wiping their own registers at idle: Why the Linux bring-up on Apple's M4 is bare-metal detective work – and what sysadmins can learn from it.

#Linux #Apple Silicon #Asahi Linux

~ 16 MIN Read article →

// 28.09.2026 // Architecture

A Resume Without Being Held Hostage

LinkedIn is annoying, yet remains parked in the management VLAN for lack of alternatives. Vutuv offers an open-source approach featuring ActivityPub and open exports. But is a technically superior profile model enough against the market power of the B2B top dog?

#Vutuv #LinkedIn #ActivityPub

~ 9 MIN Read article →

// 26.09.2026 // Linux

Is the Classic Linux Sysadmin Dying in the Age of AI and DevOps?

From hand-crafted servers to Infrastructure as Code and AI assistants: Why automation eliminates manual chores while making Linux systems engineering more demanding.

#Linux #Sysadmin #DevOps

~ 4 MIN Read article →

// 19.09.2026 // Architecture

W Social & The AT Protocol: When European Ambition Fails at Onboarding

A European, privacy-oriented social network powered by the AT Protocol is a phenomenal idea. When you verify government ID cards in advance and then strand the onboarding in support with QR codes from a print campaign, it becomes a masterclass in interfaces, processes, and trust.

#AT Protocol #Bluesky #PDS

~ 12 MIN Read article →