Stop IPv4 Point-To-Point Addressing your Networks

IPv4 addressing on links is no longer required to route IPv4. What you say?? Yes, you can stop IPv4 addressing your point to point links with Legacy…

NAT64: Using `jool` on Ubuntu 20.04

I found that jool has very good tutorials, but all the commands to get going are hidden in these large tutorials. Here are the steps I took…

Ansible + Handy PyPI CLI Tools

I often use a lot of PyPI CLI tools. Here is an example of how to get them easily installed and kept up to date via Ansible…

IPv6 + Flow labels

Recently a teammate and I have come across a frame forwarding issue with ECMP on a hardware ASIC in a device I work on where the use…

BitBucket + hg + branch merges

Ever have to update/merge a PR on BitBucket with Mercurial? I couldn’t find documentation anywhere, so doing so here: hg up BOOKMARK_NAME hg merge [–preview] -r REV…

Python 3.7 – The best Python Release Ever!

Especially because: https://github.com/python/cpython/commit/47320a652e872003f3dd3a9db4243067b09dd316#diff-c6a3fa0ad7b17f8e32f340835a4e5353 🙂

GitHub + Rebasing from upstream/master to origin/master

So, every now and then on a PR I need to rebase and fix things so I can retest etc. – I always forget this so blogging…

IPv6 Tacacs+ Support (tac_plus)

Recently @ Facebook we found that we required IPv6 access to TACACS for auth (AAA) for the majority of our production Network Equipment. Tacacs+ (tac_plus) is an old…

VMWare Guest Consoles over a WAN with Latency

Have you ever used the VMWare console over a WAN with latency and it enters multiple key strokes into the console and makes using the console super…

IPERF CSV Data Summary Script

Recently I was required to do a network performance test between a Head Office and a WAN site. I knocked up this quick python script to parse…