- if sudo iptables -t nat -C PREROUTING -p tcp -m tcp --dport 17070 -j DNAT --to-destination $OSM_VCA_HOST; then
- sudo iptables -t nat -D PREROUTING -p tcp -m tcp --dport 17070 -j DNAT --to-destination $OSM_VCA_HOST
+ if [ -z "$DEFAULT_IP" ]; then
+ DEFAULT_IF=`route -n |awk '$1~/^0.0.0.0/ {print $8}'`
+ [ -z "$DEFAULT_IF" ] && FATAL "Not possible to determine the interface with the default route 0.0.0.0"
+ DEFAULT_IP=`ip -o -4 a |grep ${DEFAULT_IF}|awk '{split($4,a,"/"); print a[1]}'`
+ [ -z "$DEFAULT_IP" ] && FATAL "Not possible to determine the IP address of the interface with the default route"
+ fi
+
+ if sudo iptables -t nat -C PREROUTING -p tcp -m tcp -d $DEFAULT_IP --dport 17070 -j DNAT --to-destination $OSM_VCA_HOST; then
+ sudo iptables -t nat -D PREROUTING -p tcp -m tcp -d $DEFAULT_IP --dport 17070 -j DNAT --to-destination $OSM_VCA_HOST