Networking on Omid Farhang

Linux VXLAN and Why CNI Exists

Thu, 10 Sep 2026 12:00:00 +0330

Ethernet does not stretch across hosts by itself. VXLAN is one overlay; CNI is the contract that plugs a pod into whatever network the cluster actually uses.

Linux Network Namespaces and Virtual Links

Fri, 04 Sep 2026 21:00:00 +0330

Isolate network stacks with netns, connect them with veth, and choose bridge vs macvlan vs ipvlan — the kernel primitives containers reuse.

Linux as a Router: Forwarding, Policy Routing, and nftables

Tue, 01 Sep 2026 21:00:00 +0330

Linux leaves the bridge domain: IP forwarding, policy routing for two uplinks, and nftables input vs forward.

Advanced Networking in Linux: VLANs, Bonding, and Bridging

Fri, 21 Jun 2024 21:30:37 +0330

A practical guide to Linux VLANs, bonding, and bridging: how to layer interfaces, avoid common mistakes, and build a resilient server or virtualization-host network.

Google Chrome in Ubuntu keeps detecting network change

Thu, 06 Jul 2017 19:14:41 +0000

Recently I had problem with my Ubuntu, Whenever I tried to open a website my Chromium told me that a Network Change has been detected and after 1-2 reload that sites would load and sometimes failed to load fully.

After looking up for that problem, I found out many other people had same problem and it has something to do with “avahi-daemon”.

Solution

According to the links I found in Ubuntu forums, this problem comes from IPv6 in Ubuntu and disabling that service will fix it, I tried it and it worked: