Description

In the case where $fqdn and $hostname are identical,

node base {
	host { "$fqdn":
		ip => "$ipaddress",
		alias => [ "$hostname" ],
		ensure => present,
	}
}

produces an error message similar to:

warning: Configuration could not be instantiated: Duplicate definition: Host[foo] is already defined in file /etc/puppet/manifests/nodes/BASE.pp at line 18; cannot redefine

It seems that, rather than producing a warning, the code should eventually evaluate to a noop.

Attached is a patch that I believe does just that. An accompanying test will be forthcoming.