diff --git a/SUMMARY.md b/SUMMARY.md
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@@ -1,6 +1,7 @@
 # Summary
 
 * [da/net OER](README.md)
+    * [da/net edurouter](danetro/README.md)
     * [Managing Networks](manage-networks/README.md)
         * [Intro](manage-networks/Intro/README.md)
         * [Yang Models](manage-networks/yang-models/README.md)
diff --git a/danetro/README.md b/danetro/README.md
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+# The da/net edurouter (danetro)
+
+The da/net group uses a virtual machine with jails as educational environment for students to work with exercises around various network topics in our courses.
+
+The virtual machine environment is called the da/net edurouter, or short danetro.