define firewall::router::munin(
   $destination,
   $port_orig,
   $port_dest      = '',
   $zone           = 'loc',
   $order          = '400',
   $originaldest   = $ipaddress
   $implementation = lookup('firewall::implementation', undef, undef, 'shorewall'),
) {
  if $implementation == 'shorewall' {
    firewall::implementations::shorewall::router::munin { "${name}":
      destination  => $destination,
      port_orig    => $port_orig,
      port_dest    => $port_dest,
      zone         => $zone,
      order        => $order,
      originaldest => $originaldest,
    }
  }
}