My (slightly) overkill NTP infrastructure

Context When I was working at the amazing swiss 🇨🇭 hoster Infomaniak, I had the change to setup their NTP infrastructure. Previously, they may have been using an old, single point of failure, forgotten, server that acted as the main time provider. When you have thousands of clients and a time-sensitive infrastructure, and multiple DCs this in not really acceptable. So the goal was to create something better, and we ended up using some PCI-e cards with an OCXO and a GPS + PPS connection.

My 21 km peer to peer network link

Context I recently moved into a new house. Sadly, there was still no fiber connectivity in my suburb. That was quite painful as where I lived before I had a good 10Gbits/s internet connectivity. When I subscribed to the ADSL and after setting up everything I realized that indeed it was really painful to work on a 5 Mbit/s internet connection; just pulling a base docker image took time. It’s sad because Free (the ADSL provider) gives you a fixed IPv4 and a /64 IPv6 subnet (well, a /56 would be better, but oh well).