define firewall::router::tor(
  $implementation = lookup('firewall::implementation', undef, undef, 'shorewall'),
  $destination, $zone = 'loc', $originaldest = $ipaddress
) {
  if $implementation == 'shorewall' {
    firewall::implementations::shorewall::router::tor { "${name}":
      destination  => $destination,
      zone         => $zone,
      originaldest => $originaldest,
    }
  }
}