Document a possible need for an iptables rule

README.md

@@ -36,6 +36,9 @@ $ sudo ip link set eth0 up
 # Attach your network card to the bridge
 $ sudo ip link set eth0 master my-bridge
 
+# If your firewall's policy for forwarding is to drop packets, you'll need to add an ACCEPT rule
+$ sudo iptables -A FORWARD -i my-bridge -j ACCEPT
+
 # Get an IP for the host (will go out to the DHCP server since eth0 is attached to the bridge)
 $ sudo dhcpcd my-bridge
 ```