diff --git a/luni/src/test/java/libcore/java/net/InetAddressTest.java b/luni/src/test/java/libcore/java/net/InetAddressTest.java
index edca1a6..c7617ab 100644
--- a/luni/src/test/java/libcore/java/net/InetAddressTest.java
+++ b/luni/src/test/java/libcore/java/net/InetAddressTest.java
@@ -77,6 +77,8 @@
         assertEquals("/1.2.3.4", InetAddress.parseNumericAddress("1.2.3.4").toString());
         // Regular IPv6.
         assertEquals("/2001:4860:800d::68", InetAddress.parseNumericAddress("2001:4860:800d::68").toString());
+        // Mapped IPv4
+        assertEquals("/127.0.0.1", InetAddress.parseNumericAddress("::ffff:127.0.0.1").toString());
         // Optional square brackets around IPv6 addresses, including mapped IPv4.
         assertEquals("/2001:4860:800d::68", InetAddress.parseNumericAddress("[2001:4860:800d::68]").toString());
         assertEquals("/127.0.0.1", InetAddress.parseNumericAddress("[::ffff:127.0.0.1]").toString());
@@ -101,9 +103,22 @@
     }
 
     public void test_isNumeric() throws Exception {
+        // IPv4
         assertTrue(InetAddress.isNumeric("1.2.3.4"));
         assertTrue(InetAddress.isNumeric("127.0.0.1"));
 
+        // IPv6
+        assertTrue(InetAddress.isNumeric("::1"));
+        assertTrue(InetAddress.isNumeric("2001:4860:800d::68"));
+
+        // Mapped IPv4
+        assertTrue(InetAddress.isNumeric("::ffff:127.0.0.1"));
+
+        // Optional square brackets around IPv6 addresses, including mapped IPv4.
+        assertTrue(InetAddress.isNumeric("[2001:4860:800d::68]"));
+        assertTrue(InetAddress.isNumeric("[::ffff:127.0.0.1]"));
+
+        // Negative test
         assertFalse(InetAddress.isNumeric("example.com"));
 
         for (String invalid : INVALID_IPv4_NUMERIC_ADDRESSES) {
@@ -113,6 +128,7 @@
 
     public void test_isLinkLocalAddress() throws Exception {
         assertFalse(InetAddress.getByName("127.0.0.1").isLinkLocalAddress());
+        assertFalse(InetAddress.getByName("::ffff:127.0.0.1").isLinkLocalAddress());
         assertTrue(InetAddress.getByName("169.254.1.2").isLinkLocalAddress());
 
         assertFalse(InetAddress.getByName("fec0::").isLinkLocalAddress());
@@ -195,6 +211,9 @@
 
         assertEquals("127.0.0.1", Inet4Address.LOOPBACK.getHostAddress());
 
+        // IPv4 mapped address
+        assertEquals("127.0.0.1", InetAddress.getByName("::ffff:127.0.0.1").getHostAddress());
+
         InetAddress aAddr = InetAddress.getByName("224.0.0.0");
         assertEquals("224.0.0.0", aAddr.getHostAddress());
 
diff --git a/luni/src/test/java/libcore/java/security/cert/SubjectAlternativeNameTest.java b/luni/src/test/java/libcore/java/security/cert/SubjectAlternativeNameTest.java
index 88d5011..1b440c1 100644
--- a/luni/src/test/java/libcore/java/security/cert/SubjectAlternativeNameTest.java
+++ b/luni/src/test/java/libcore/java/security/cert/SubjectAlternativeNameTest.java
@@ -38,7 +38,9 @@
 
     public void testFormatIpv4MappedAddress() throws Exception {
         byte[] mappedAddress = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, 127, 0, 0, 1 };
-        assertEquals("127.0.0.1", formatIpAddress(mappedAddress));
+        String decoded = formatIpAddress(mappedAddress);
+        assertTrue(decoded,
+                decoded.equals("127.0.0.1") || decoded.equalsIgnoreCase("::ffff:127.0.0.1"));
     }
 
     public void testFormatIpv6Address() throws Exception {