Networking useful stuff

Site dedicated mainly to internetworking. The goal is to share experiences, teach IP, IPv6. Talk about Linux, IP services, servers, promote IPv6 adoption, routing protocols, security and in some cases just some thoughts. Keywords: linux, cisco, ospf, bgp, eigrp, ip, ipv6, sla, link, routers, routings, telco, telecommunications, security, ipv4

Sunday, October 29, 2023

How to temporarily disable IPv4 on an interface within Linux

Case: We want to disable IPv4 on an interface Solution: sudo ip -4 addr flush dev enp0s1 Explanation: The above command removes all...

Friday, October 13, 2023

How to uninstall brew in MAC

How to uninstall brew in MAC Option 1: /bin/bash -c " $( curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/uninstal...

NGINX Reverse Proxy for an IPv6-Only Server Farm

Introduction This work presents a very simple way to offer dual-stack web access to an IPv6-only server farm using NGINX. The continued grow...

Thursday, July 6, 2023

Google returns: 403. That's an error. Your client does not have permission to get URL / from this server. That's all we know.

Introduction: You want to do a google search and the page returns: "403. That’s an error. Your client does not have permission t...

Thursday, June 29, 2023

Bar Chart Race IPv6 Deployment in LAC Region - May 2014 to June 2023

Thursday, May 25, 2023

Strange ssh behavior on MAC - Copy/Paste Issues

Situation: Strange behavior of SSH on MAC, problems with copy/paste in terminal during ssh. Does the clipboard work in other application...

Thursday, March 16, 2023

A Look at LACNIC’s IPv6-Only Members

Introduction This paper seeks to analyze the announcement and status of the prefixes held by organizations known as IPv6-only LACNIC members...

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