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Apt-get connecting to ‘security.ubuntu.com’

Published 2016-09-23

If you have server on Linode what ever Ubuntu 14.04 or 16.04 and update the system using apt-get update eventually it would reach a point where it got stuck.

Open file

$ nano /etc/gai.conf

and uncomment the following line:

#
# For sites which prefer IPv4 connections change the last line to
#
precedence ::ffff:0:0/96 100

This allows you to still use IPv6 but IPv4 as the precedence that is generally more stable.