diff --git a/README.md b/README.md
index 37861e7..60e9b6c 100644
--- a/README.md
+++ b/README.md
@@ -19,3 +19,11 @@ To build all of the images:
 ```sh
 nix build .#
 ```
+
+## Flashing and testing
+
+Routers without Openwrt would need to be flashed with a "factory" images and routers that already have Openwrt installed need only a "sysupgrade" image.
+
+SSH is available from the WAN port with these builds so after flashing I recommend connecting router WAN ports to a switch and SSH to them as their IPs show up in the log of you DHCP server.
+
+There is no DHCP server installed in the image so I've also connected the WAN port to a LAN port on the same router, and then chained the LAN ports between routers.