Defeating Bufferbloat: Or How I Learned to Stop Worrying and Love QoS

“The Internet is coming!” - Jen, probably experiencing bufferbloat during her presentation The Problem: Your Internet is Lying to You (And It’s Not Even Good at It) You know what’s really frustrating? When you pay for gigabit fiber, you run a speed test and see glorious numbers like 680 Mbps download, and then the moment someone starts uploading vacation photos to the cloud, your gaming session turns into a slideshow. Your ping goes from a respectable 12ms to a painful 49ms, and suddenly you’re being eliminated in games before you even see the enemy. ...

April 15, 2025 Â· 10 min Â· Luis Sarabando

Vodafone VoIP: The Secret They Don't Want You to Know (But We Found Anyway)

“What’s your password?” - Jen, probably trying to configure VoIP The Problem: Vodafone’s VoIP Black Box (It’s Not Actually Black, But It Might As Well Be) You know what’s really frustrating? When your ISP provides you with a fancy fiber connection with VoIP capabilities, but they won’t give you the actual credentials to use it on your own devices. It’s like Reynholm Industries giving you a computer but not telling you the password - and then Roy has to spend three hours explaining that “password123” isn’t secure. ...

March 5, 2025 Â· 7 min Â· Luis Sarabando

MAAS Default Gateway Configuration: When Two Networks Play Tug-of-War

Hello there, fellow IT enthusiasts! Today I’m going to walk you through a peculiar little quirk in MAAS (Metal as a Service) that’s about as intuitive as explaining to Jen what RAM actually does. The Problem with Multiple Networks (Or: “Why Is My Traffic Going That Way?”) You see, when you have two networks in MAAS, it’s like having two doors to leave a building - perfectly reasonable until you realize MAAS can’t decide which one should be the main exit. The GUI, much like Roy’s dating strategy, completely fails to provide an option for selecting your default gateway. ...

February 22, 2025 Â· 3 min Â· Luis Sarabando