params in shorewall

Objetivo: Colocar alias en shorewall que haga refenrecia a un conjunto de opciones o interfaces de red example: tengo varias vlanes: vlan1, vlan2, vlan3 ... como lo relaciono con una variable que me permita exportar hacia los demas archivos.

root@localhost# cat >> /etc/shorewall/params << "EOF"
   LAN_VLAN_LAB1=eth1.1
   LAN_VLAN_LAB2=eth1.2
   LAN_VLAN_LAB3=eth1.3
   LAN_VLAN_LAB4=eth1.4
   LAN_VLAN_LAB5=eth1.5
   LAN_VLAN_LAB6=eth1.6
   LAN_VLAN_LAB7=eth1.7
   LAN_VLAN_LAB8=eth1.8
   LAN_VLAN_LAB9=eth1.9
   OPTIONS_INT=tcpflags,nosmurfs,routefilter
EOF

root@localhost# cat >> /etc/shorewall/interfaces << "EOF"
#ZONE   INTERFACE       BROADCAST       OPTIONS
WAN     eth0            detect          $OPTIONS_INT
LAN     $LAN_VLAN_LAB1  detect          $OPTIONS_INT
LAN     $LAN_VLAN_LAB2  detect          $OPTIONS_INT
LAN     $LAN_VLAN_LAB3  detect          $OPTIONS_INT
LAN     $LAN_VLAN_LAB4  detect          $OPTIONS_INT
LAN     $LAN_VLAN_LAB5  detect          $OPTIONS_INT
LAN     $LAN_VLAN_LAB6  detect          $OPTIONS_INT
LAN     $LAN_VLAN_LAB7  detect          $OPTIONS_INT
LAN     $LAN_VLAN_LAB8  detect          $OPTIONS_INT
LAN     $LAN_VLAN_LAB9  detect          $OPTIONS_INT
EOF