diff --git a/Makefile b/Makefile
index dbba462..1af5401 100644
--- a/Makefile
+++ b/Makefile
@@ -10,6 +10,7 @@ qemu_ifname_br = brlabsync
 qemu_ifname_tap = taplabsync
 qemu_hostname = qemumachine
 qemu_host_ip = 10.2.2.1
+qemu_network = 10.2.2.0
 qemu_netmask = 24
 qemu_vm_ip = 10.2.2.10
 qemu_disk = tmp/qemu-disk.img
@@ -121,6 +122,7 @@ qemu-network:  /sys/devices/virtual/net/$(qemu_ifname_br)/brif/$(qemu_ifname_tap
 	fi
 	sudo ip link set $(qemu_ifname_tap) up
 	sudo ip link set $(qemu_ifname_br) up
+	sudo iptables -t nat -A POSTROUTING -s $(qemu_network)/$(qemu_netmask) ! -o $(qemu_ifname_br) -j MASQUERADE
 
 .PHONY: qemu
 qemu: qemu-network $(qemu_disk) docker-services