Update network preference priority value for VPN am: b5c9e3567f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/15258458

Change-Id: I79451722e100dcb8d066e9047656b4410d3bab82
diff --git a/service/src/com/android/server/ConnectivityService.java b/service/src/com/android/server/ConnectivityService.java
index f6639dc..1fdb72f 100644
--- a/service/src/com/android/server/ConnectivityService.java
+++ b/service/src/com/android/server/ConnectivityService.java
@@ -428,7 +428,7 @@
     // PREFERENCE_PRIORITY_NONE when sending to netd.
     static final int PREFERENCE_PRIORITY_DEFAULT = 1000;
     // As a security feature, VPNs have the top priority.
-    static final int PREFERENCE_PRIORITY_VPN = 1;
+    static final int PREFERENCE_PRIORITY_VPN = 0; // Netd supports only 0 for VPN.
     // Priority of per-app OEM preference. See {@link #setOemNetworkPreference}.
     @VisibleForTesting
     static final int PREFERENCE_PRIORITY_OEM = 10;