#### DMZ configuration                                                          
config interface        dmz                                                     
        option ifname   "eth0.2"                                                
        option proto    static                                                  
        option ipaddr   '172.18.20.5'                                           
        option netmask  255.255.255.0                                           
                                                                                
root@hugo:/# ifup eth0.2
/sbin/ifup: eval: 1: Syntax error: Bad substitution