LXD is a fantastic container virtualization tool that comes by default with Ubuntu. In one of my applications I needed to have many containers each within it’s own VLAN network. So I used OpenVSwitch in combination with LXD to achieve this. There is no inherent facility in LXD to provide [...]

For the past 5 years or so, I have been using a single ISP at home and mobile data for backup when it went down. But since last few months, the ISP service became a bit unreliable – this is more related to the rainy season. Mobile data doesn’t give [...]

An insight into a networking problem thrt I faced seven years ago wrt unable to use Internet on Linux after learning networking and Linux over the years.

I use dynamic DNS for my home internet connection so that I can access the machines from anywhere on the internet. And I use OpenWRT on my router. Earlier I was using Namecheap for managing DNS but I switched to CloudFlare for performance and security reasons of the website. Unfortunately [...]

Recently I discovered something called Proxy ARP. I had seen this earlier in sysctl options but never understood it and why would someone need it, until one day I worked in a networking setup which used this to route traffic from the machine to the Internet. It’s an interesting technique [...]