alphagov/pp-puppet — pull request #173 by alexmuller (2013-12-05 15:10:44+00:00)
Title: Ensure CNAMEs are unique for dnsmasq

dnsmasq will error if you have duplicate CNAMEs in your config:

$ sudo /etc/init.d/dnsmasq restart
* Restarting DNS forwarder and DHCP server configuration syntax check [fail]

Remove duplicate CNAMEs using `unique()`.