config_get src $1 src
config_get src_ip $1 src_ip
+ config_get src_dip $1 src_dip
config_get src_port $1 src_port
config_get src_dport $1 src_dport
config_get src_mac $1 src_mac
$IPTABLES -A zone_${src}_prerouting -t nat \
${proto:+-p $proto} \
${src_ip:+-s $src_ip} \
+ ${src_dip:+-d $src_dip} \
${src_port:+--sport $src_port} \
${src_dport:+--dport $src_dport} \
${src_mac:+-m mac --mac-source $src_mac} \