diff --git a/overlay/common/packages/modules/NetworkStack/res/values/config.xml b/overlay/common/packages/modules/NetworkStack/res/values/config.xml
index ea6e6f3f4ba63760ae5eb15857463d78c0827b63..5f482f2a7501910403b88a65ed87f8486826dcf0 100644
--- a/overlay/common/packages/modules/NetworkStack/res/values/config.xml
+++ b/overlay/common/packages/modules/NetworkStack/res/values/config.xml
@@ -4,8 +4,14 @@
     <bool name="config_dhcp_client_hostname">true</bool>
 
     <!-- HTTP URL for network validation, to use for detecting captive portals. -->
-    <string name="default_captive_portal_http_url" translatable="false">http://204.ecloud.global</string>
+    <string name="config_captive_portal_http_url" translatable="false">http://connectivity.ecloud.global</string>
 
     <!-- HTTPS URL for network validation, to use for confirming internet connectivity. -->
-    <string name="default_captive_portal_https_url" translatable="false">https://connectivity.ecloud.global</string>
+    <string name="config_captive_portal_https_url" translatable="false">https://connectivity.ecloud.global</string>
+
+    <!-- List of fallback URLs to use for detecting captive portals. -->
+    <string-array name="config_captive_portal_fallback_urls" translatable="false">
+        <item>http://204.ecloud.global</item>
+        <item>http://ecloud.global/generate_204</item>
+    </string-array>
 </resources>