diff --git a/staticlibs/device/com/android/net/module/util/structs/IaAddressOption.java b/staticlibs/device/com/android/net/module/util/structs/IaAddressOption.java
new file mode 100644
index 0000000..575a1f3
--- /dev/null
+++ b/staticlibs/device/com/android/net/module/util/structs/IaAddressOption.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.net.module.util.structs;
+
+import static com.android.net.module.util.NetworkStackConstants.DHCP6_OPTION_IA_ADDR;
+
+import com.android.net.module.util.Struct;
+import com.android.net.module.util.Struct.Field;
+import com.android.net.module.util.Struct.Type;
+
+import java.net.Inet6Address;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+/**
+ * DHCPv6 IA Address option.
+ * https://tools.ietf.org/html/rfc8415. This does not contain any option.
+ *
+ * 0                   1                   2                   3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |          OPTION_IAADDR        |          option-len           |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                                                               |
+ * |                         IPv6-address                          |
+ * |                                                               |
+ * |                                                               |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                      preferred-lifetime                       |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * |                        valid-lifetime                         |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * .                                                               .
+ * .                        IAaddr-options                         .
+ * .                                                               .
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+public class IaAddressOption extends Struct {
+    public static final int LENGTH = 24; // option length excluding IAaddr-options
+
+    @Field(order = 0, type = Type.S16)
+    public final short code;
+    @Field(order = 1, type = Type.S16)
+    public final short length;
+    @Field(order = 2, type = Type.Ipv6Address)
+    public final Inet6Address address;
+    @Field(order = 3, type = Type.U32)
+    public final long preferred;
+    @Field(order = 4, type = Type.U32)
+    public final long valid;
+
+    IaAddressOption(final short code, final short length, final Inet6Address address,
+            final long preferred, final long valid) {
+        this.code = code;
+        this.length = length;
+        this.address = address;
+        this.preferred = preferred;
+        this.valid = valid;
+    }
+
+    /**
+     * Build an IA Address option from the required specific parameters.
+     */
+    public static ByteBuffer build(final short length, final long id, final Inet6Address address,
+            final long preferred, final long valid) {
+        final IaAddressOption option = new IaAddressOption((short) DHCP6_OPTION_IA_ADDR,
+                length /* 24 + IAaddr-options length */, address, preferred, valid);
+        return ByteBuffer.wrap(option.writeToBytes(ByteOrder.BIG_ENDIAN));
+    }
+}
diff --git a/staticlibs/device/com/android/net/module/util/structs/IaPrefixOption.java b/staticlibs/device/com/android/net/module/util/structs/IaPrefixOption.java
index f0e4409..59d655c 100644
--- a/staticlibs/device/com/android/net/module/util/structs/IaPrefixOption.java
+++ b/staticlibs/device/com/android/net/module/util/structs/IaPrefixOption.java
@@ -18,8 +18,6 @@
 
 import static com.android.net.module.util.NetworkStackConstants.DHCP6_OPTION_IAPREFIX;
 
-import androidx.annotation.VisibleForTesting;
-
 import com.android.net.module.util.Struct;
 import com.android.net.module.util.Struct.Field;
 import com.android.net.module.util.Struct.Type;
@@ -69,7 +67,6 @@
     @Field(order = 5, type = Type.ByteArray, arraysize = 16)
     public final byte[] prefix;
 
-    @VisibleForTesting
     public IaPrefixOption(final short code, final short length, final long preferred,
             final long valid, final byte prefixLen, final byte[] prefix) {
         this.code = code;
diff --git a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
index 9149160..f9895c6 100644
--- a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
@@ -240,6 +240,7 @@
     public static final int DHCP6_SERVER_PORT = 547;
     public static final Inet6Address ALL_DHCP_RELAY_AGENTS_AND_SERVERS =
             (Inet6Address) InetAddresses.parseNumericAddress("ff02::1:2");
+    public static final int DHCP6_OPTION_IA_ADDR = 5;
     public static final int DHCP6_OPTION_IA_PD = 25;
     public static final int DHCP6_OPTION_IAPREFIX = 26;