diff --git a/staticlibs/framework/com/android/net/module/util/LinkPropertiesUtils.java b/staticlibs/framework/com/android/net/module/util/LinkPropertiesUtils.java
index 1565f2b..e271f64 100644
--- a/staticlibs/framework/com/android/net/module/util/LinkPropertiesUtils.java
+++ b/staticlibs/framework/com/android/net/module/util/LinkPropertiesUtils.java
@@ -146,6 +146,24 @@
                 right != null ? right.getLinkAddresses() : null);
     }
 
+    /**
+     * Compares {@code left} {@code LinkProperties} allLinkAddresses against the {@code right}.
+     *
+     * @param left A LinkProperties or null
+     * @param right A LinkProperties or null
+     * @return {@code true} if both are identical, {@code false} otherwise.
+     * @see LinkProperties#getAllLinkAddresses()
+     */
+    public static boolean isIdenticalAllLinkAddresses(@Nullable LinkProperties left,
+            @Nullable LinkProperties right) {
+        if (left == right) return true;
+        if (left == null || right == null) return false;
+        final List<LinkAddress> leftAddresses = left.getAllLinkAddresses();
+        final List<LinkAddress> rightAddresses = right.getAllLinkAddresses();
+        if (leftAddresses.size() != rightAddresses.size()) return false;
+        return leftAddresses.containsAll(rightAddresses);
+    }
+
    /**
      * Compares {@code left} {@code LinkProperties} interface addresses against the {@code right}.
      *
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/LinkPropertiesUtilsTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/LinkPropertiesUtilsTest.java
index 09f0490..80ab618 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/LinkPropertiesUtilsTest.java
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/LinkPropertiesUtilsTest.java
@@ -94,6 +94,9 @@
         assertTrue(LinkPropertiesUtils.isIdenticalAddresses(source, target));
         assertTrue(LinkPropertiesUtils.isIdenticalAddresses(target, source));
 
+        assertTrue(LinkPropertiesUtils.isIdenticalAllLinkAddresses(source, target));
+        assertTrue(LinkPropertiesUtils.isIdenticalAllLinkAddresses(target, source));
+
         assertTrue(LinkPropertiesUtils.isIdenticalDnses(source, target));
         assertTrue(LinkPropertiesUtils.isIdenticalDnses(target, source));
 
@@ -116,12 +119,17 @@
         assertFalse(LinkPropertiesUtils.isIdenticalAddresses(source, target));
         assertFalse(LinkPropertiesUtils.isIdenticalAddresses(target, source));
 
+        assertFalse(LinkPropertiesUtils.isIdenticalAllLinkAddresses(source, target));
+        assertFalse(LinkPropertiesUtils.isIdenticalAllLinkAddresses(target, source));
+
         // Currently, target contains V4_LINKADDR, V6_LINKADDR and testLinkAddr.
         // Compare addresses.size() equals but contains different address.
         target.removeLinkAddress(V4_LINKADDR);
         assertEquals(source.getAddresses().size(), target.getAddresses().size());
         assertFalse(LinkPropertiesUtils.isIdenticalAddresses(source, target));
         assertFalse(LinkPropertiesUtils.isIdenticalAddresses(target, source));
+        assertFalse(LinkPropertiesUtils.isIdenticalAllLinkAddresses(source, target));
+        assertFalse(LinkPropertiesUtils.isIdenticalAllLinkAddresses(target, source));
         // Restore link address
         target.addLinkAddress(V4_LINKADDR);
         target.removeLinkAddress(testLinkAddr);
@@ -169,6 +177,13 @@
         target.setHttpProxy(null);
         assertFalse(LinkPropertiesUtils.isIdenticalHttpProxy(source, target));
         assertFalse(LinkPropertiesUtils.isIdenticalHttpProxy(target, source));
+
+        final LinkProperties stacked = new LinkProperties();
+        stacked.setInterfaceName("v4-" + target.getInterfaceName());
+        stacked.addLinkAddress(testLinkAddr);
+        target.addStackedLink(stacked);
+        assertFalse(LinkPropertiesUtils.isIdenticalAllLinkAddresses(source, target));
+        assertFalse(LinkPropertiesUtils.isIdenticalAllLinkAddresses(target, source));
     }
 
     private <T> void compareResult(List<T> oldItems, List<T> newItems, List<T> expectRemoved,