Fixing a slow apt-get (disable ipv6)

"Cat5 Network Cable" by noor.azriena is licensed under CC BY 2.0

 

I hit this issue on a raspi 3 running Ubuntu.

I was getting ~4000 B/s so a small download was going to take 6 hours.

https://www.techrepublic.com/article/how-to-fix-the-slow-apt-get-update-issue-on-linux-machines/

Turned off ipv6 as per the above article and it went back to normal speeds.