IP forwarding needs to enabled: edit /etc/sysctl.conf and ensure that the line
net.ipv4.ip_forward = 1 is there and not commented out.
Then you need to execute this command:
sudo iptables -t nat -A OUTPUT -d $SOURCEIPADDRESS -j DNAT --to-destination $DESTIPADDRESS
$SOURCEIPADDRESS is the address that you want redirecting to
Note - this command doesn't survive a reboot.