DataDog/puppet-datadog-agent — pull request #26 by ksmith14 (2014-07-03 22:50:25+00:00)
Title: Use port 80 when accessing Ubuntu keyserver

By default apt-key will attempt to access a keyserver on 11371/tcp which
can be problematic for environments with firewalls or network ACLs.

The Ubuntu keyserver also listens on port 80/tcp which is much more
firewall friendly.