Add a function to replace all the link addresses.

Bug: 10232006
Change-Id: I689ce4735999dac2ab5e1fae09d80b1f734292a1

core/java/android/net/LinkProperties.java

@@ -197,6 +197,16 @@ public class LinkProperties implements Parcelable {
         return addresses;
     }
 
+    /**
+     * Replaces the LinkAddresses on this link with the given collection of addresses.
+     */
+    public void setLinkAddresses(Collection<LinkAddress> addresses) {
+        mLinkAddresses.clear();
+        for (LinkAddress address: addresses) {
+            addLinkAddress(address);
+        }
+    }
+
     public void addDns(InetAddress dns) {
         if (dns != null) mDnses.add(dns);
     }

core/tests/coretests/src/android/net/LinkPropertiesTest.java

@@ -363,4 +363,19 @@ public class LinkPropertiesTest extends TestCase {
         assertFalse(lp.hasIPv4Address());
         assertFalse(lp.removeLinkAddress(LINKADDRV4));
     }
+
+    @SmallTest
+    public void testSetLinkAddresses() {
+        LinkProperties lp = new LinkProperties();
+        lp.addLinkAddress(LINKADDRV4);
+        lp.addLinkAddress(LINKADDRV6);
+
+        LinkProperties lp2 = new LinkProperties();
+        lp2.addLinkAddress(LINKADDRV6);
+
+        assertFalse(lp.equals(lp2));
+
+        lp2.setLinkAddresses(lp.getLinkAddresses());
+        assertTrue(lp.equals(lp));
+    }
 }