The Problem when I did sudo apt update && sudo apt upgrade -y I noticed that it was trying to connect to the ubuntu mirror over IPv6 (and failing) My ISP hasn’t enabled IPv6 for me, so I can’t connect over IPv6. and I don’t have any IPv6 DNS servers. But still apt was trying to connect over IPv6… weird… The Fix You can create a file in the /etc/apt/apt.conf.d directory to force apt to use IPv4 echo 'Acquire::ForceIPv4 "true";' | sudo tee /etc/apt/apt.
Originally published on Shrirang Kahale's blog ↗
