• Importing and Exporting Heroku Postgres Databases with PG Backups

NOTE: You need an external gateway

EXTERNAL_GATEWAY="x.x.x.x"
INTERNAL_LAN="x.x.x.x/xx"
ip route flush table 4
ip route show table main | grep -Ev ^default | while read ROUTE ; do ip route add table 4 $ROUTE ; done
ip route add table 4 default via $EXTERNAL_GATEWAY
iptables -t mangle -A PREROUTING -p tcp --dport 5000 -s $INTERNAL_LAN -j MARK --set-mark 4
ip rule add fwmark 4 table 4
ip route flush cache