diff --git a/overlay/common/frameworks/base/core/res/res/values/config.xml b/overlay/common/frameworks/base/core/res/res/values/config.xml
index fd2fed46..74bf944d 100644
--- a/overlay/common/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/common/frameworks/base/core/res/res/values/config.xml
@@ -89,4 +89,9 @@
 
     <!-- Whether or not we should show the option to show battery percentage -->
     <bool name="config_battery_percentage_setting_available">false</bool>
+
+    <!-- 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 name="config_tether_upstream_automatic">true</bool>
 </resources>