Added dual homing

Change-Id: I541b898fc158749a9c8ce5e00a40ec222c9b098f
diff --git a/configuration.rst b/configuration.rst
index 58c0a19..9605d67 100644
--- a/configuration.rst
+++ b/configuration.rst
@@ -12,10 +12,10 @@
     configuration/device-config
     configuration/bridging-unicast
     configuration/dhcp-relay
-    configuration/dual-homing
     configuration/external-connectivity
+    configuration/dual-homing
     configuration/multicast
     configuration/xconnect
-    configuration/aaa
     configuration/pseudowire
+    configuration/aaa
     configuration/macsec
\ No newline at end of file