diff --git a/resource-overlay/common/Frameworks/res/values/config.xml b/resource-overlay/common/Frameworks/res/values/config.xml
index 77ed5ed..931b6af 100644
--- a/resource-overlay/common/Frameworks/res/values/config.xml
+++ b/resource-overlay/common/Frameworks/res/values/config.xml
@@ -108,6 +108,11 @@
             <item>"bt-pan"</item>
     </string-array>
 
+    <!-- When true, the tethering upstream network follows the current default
+         Internet network (except when the current default network is mobile,
+         in which case a DUN network will be used if required). -->
+    <bool translatable="false" name="config_tether_upstream_automatic">true</bool>
+
     <!-- Array of ConnectivityManager.TYPE_xxxx values allowable for tethering -->
     <!-- Common options are [1, 4] for TYPE_WIFI and TYPE_MOBILE_DUN or
     <!== [0,1,5,7] for TYPE_MOBILE, TYPE_WIFI, TYPE_MOBILE_HIPRI and TYPE_BLUETOOTH -->