class resolv {

        file { "resolv.conf":
                name => "/etc/resolv.conf",
                owner => root,
                group => root,
                mode => 644,
                source =>  $ipaddress ? {
                           /192.168.1.*/ => "resolv/resolv.1.168.192.conf",
                           default => "resolv/resolv.conf"
                }

        }