I picked up one of these nifty gadgets recently in order to provide backup WAN options on my UDM Pro setup at home, as it provides the ability to bridge WiFi and USB tethering to Ethernet, similar to various travel…
networking
A collection of 5 posts
Docker in Docker (DIND) MTU fix for docker-compose
If you're running into weird connection stalling issues when inside a Docker-in-Docker environment, it's rather likely MTU is the culprit. For example, when basic network connectivity works (ping works, curl example.com works) but…
Solving packet loss / unreachable nodes when using ZeroTier with Kubernetes
This was more annoying to figure out as this happened as some nodes happened to experience actual networking issues as this was going on, although it's possible networking issues on a node caused this to happen in the…
Live Wireshark session from remote machine
I was tasked to debug some network stack issues last week at work which required intercepting wireless traffic at the router. Previously, I would use my Macbook to share internet through an Ethernet port, and then open a Wireshark session…
Simulating out of order packets on OS X
I needed a way to simulate out of order packets in order to try to reproduce an issue I've been seeing at work, and I figured out a fairly simple way that only involves ipfw which is built-…