class firewall::virtual::icecast($destination, $zone = 'fw') {
  shorewall::rule { 'icecast-1':
    action          => 'DNAT',
    source          => 'net',
    destination     => "$zone:$destination:8000",
    proto           => 'tcp',
    destinationport => '8000',
    ratelimit       => '-',
    order           => 900,
  }

  shorewall::rule { 'icecast-2':
    action          => 'DNAT',
    source          => '$FW',
    destination     => "$zone:$destination:8000",
    proto           => 'tcp',
    destinationport => '8000',
    originaldest    => lookup('firewall::external_ip', undef, undef, $::ipaddress),
    ratelimit       => '-',
    order           => 901,
  }
}