Merge "Add a new PIO flag: DHCPv6-PD preferred flag." into main am: f75eacd3f5

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2861287

Change-Id: I277c22b3c378bad34a450f13646d10e8412aa9eb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
index f9895c6..7c4abe0 100644
--- a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
@@ -189,6 +189,7 @@
 
     public static final byte PIO_FLAG_ON_LINK = (byte) (1 << 7);
     public static final byte PIO_FLAG_AUTONOMOUS = (byte) (1 << 6);
+    public static final byte PIO_FLAG_DHCPV6_PD_PREFERRED = (byte) (1 << 4);
 
     /**
      * TCP constants.