diff --git a/framework/src/android/net/ITestNetworkManager.aidl b/framework/src/android/net/ITestNetworkManager.aidl
index d18b931..9432acb 100644
--- a/framework/src/android/net/ITestNetworkManager.aidl
+++ b/framework/src/android/net/ITestNetworkManager.aidl
@@ -30,7 +30,8 @@
 interface ITestNetworkManager
 {
     TestNetworkInterface createInterface(boolean isTun, boolean hasCarrier, boolean bringUp,
-            in LinkAddress[] addrs, in @nullable String iface);
+            boolean disableIpv6ProvisioningDelay, in LinkAddress[] addrs,
+            in @nullable String iface);
 
     void setCarrierEnabled(in TestNetworkInterface iface, boolean enabled);
 
diff --git a/framework/src/android/net/TestNetworkManager.java b/framework/src/android/net/TestNetworkManager.java
index 788834a..b64299f 100644
--- a/framework/src/android/net/TestNetworkManager.java
+++ b/framework/src/android/net/TestNetworkManager.java
@@ -59,6 +59,8 @@
     private static final boolean TUN = true;
     private static final boolean BRING_UP = true;
     private static final boolean CARRIER_UP = true;
+    // sets disableIpv6ProvisioningDelay to false.
+    private static final boolean USE_IPV6_PROV_DELAY = false;
     private static final LinkAddress[] NO_ADDRS = new LinkAddress[0];
 
     /** @hide */
@@ -167,8 +169,8 @@
     public TestNetworkInterface createTunInterface(@NonNull Collection<LinkAddress> linkAddrs) {
         try {
             final LinkAddress[] arr = new LinkAddress[linkAddrs.size()];
-            return mService.createInterface(TUN, CARRIER_UP, BRING_UP, linkAddrs.toArray(arr),
-                    null /* iface */);
+            return mService.createInterface(TUN, CARRIER_UP, BRING_UP, USE_IPV6_PROV_DELAY,
+                    linkAddrs.toArray(arr), null /* iface */);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
@@ -186,7 +188,8 @@
     @NonNull
     public TestNetworkInterface createTapInterface() {
         try {
-            return mService.createInterface(TAP, CARRIER_UP, BRING_UP, NO_ADDRS, null /* iface */);
+            return mService.createInterface(TAP, CARRIER_UP, BRING_UP, USE_IPV6_PROV_DELAY,
+                    NO_ADDRS, null /* iface */);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
@@ -204,7 +207,8 @@
     @NonNull
     public TestNetworkInterface createTapInterface(@NonNull LinkAddress[] linkAddrs) {
         try {
-            return mService.createInterface(TAP, CARRIER_UP, BRING_UP, linkAddrs, null /* iface */);
+            return mService.createInterface(TAP, CARRIER_UP, BRING_UP, USE_IPV6_PROV_DELAY,
+                    linkAddrs, null /* iface */);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
@@ -223,7 +227,8 @@
     @NonNull
     public TestNetworkInterface createTapInterface(boolean bringUp) {
         try {
-            return mService.createInterface(TAP, CARRIER_UP, bringUp, NO_ADDRS, null /* iface */);
+            return mService.createInterface(TAP, CARRIER_UP, bringUp, USE_IPV6_PROV_DELAY,
+                    NO_ADDRS, null /* iface */);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
@@ -245,7 +250,8 @@
     @NonNull
     public TestNetworkInterface createTapInterface(boolean bringUp, @NonNull String iface) {
         try {
-            return mService.createInterface(TAP, CARRIER_UP, bringUp, NO_ADDRS, iface);
+            return mService.createInterface(TAP, CARRIER_UP, bringUp, USE_IPV6_PROV_DELAY,
+                    NO_ADDRS, iface);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
@@ -264,7 +270,49 @@
     @NonNull
     public TestNetworkInterface createTapInterface(boolean carrierUp, boolean bringUp) {
         try {
-            return mService.createInterface(TAP, carrierUp, bringUp, NO_ADDRS, null /* iface */);
+            return mService.createInterface(TAP, carrierUp, bringUp, USE_IPV6_PROV_DELAY, NO_ADDRS,
+                    null /* iface */);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
+     * Create a tap interface for testing purposes.
+     *
+     * @param carrierUp whether the created interface has a carrier or not.
+     * @param bringUp whether to bring up the interface before returning it.
+     * @param disableIpv6ProvisioningDelay whether to disable DAD and RS delay.
+     * @hide
+     */
+    @RequiresPermission(Manifest.permission.MANAGE_TEST_NETWORKS)
+    @NonNull
+    public TestNetworkInterface createTapInterface(boolean carrierUp, boolean bringUp,
+            boolean disableIpv6ProvisioningDelay) {
+        try {
+            return mService.createInterface(TAP, carrierUp, bringUp, disableIpv6ProvisioningDelay,
+                    NO_ADDRS, null /* iface */);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+    }
+
+    /**
+     * Create a tap interface for testing purposes.
+     *
+     * @param disableIpv6ProvisioningDelay whether to disable DAD and RS delay.
+     * @param linkAddrs an array of LinkAddresses to assign to the TAP interface
+     * @return A TestNetworkInterface representing the underlying TAP interface. Close the contained
+     *     ParcelFileDescriptor to tear down the TAP interface.
+     * @hide
+     */
+    @RequiresPermission(Manifest.permission.MANAGE_TEST_NETWORKS)
+    @NonNull
+    public TestNetworkInterface createTapInterface(boolean disableIpv6ProvisioningDelay,
+            @NonNull LinkAddress[] linkAddrs) {
+        try {
+            return mService.createInterface(TAP, CARRIER_UP, BRING_UP, disableIpv6ProvisioningDelay,
+                    linkAddrs, null /* iface */);
         } catch (RemoteException e) {
             throw e.rethrowFromSystemServer();
         }
diff --git a/service/src/com/android/server/TestNetworkService.java b/service/src/com/android/server/TestNetworkService.java
index 1209579..dc922f4 100644
--- a/service/src/com/android/server/TestNetworkService.java
+++ b/service/src/com/android/server/TestNetworkService.java
@@ -120,7 +120,7 @@
      */
     @Override
     public TestNetworkInterface createInterface(boolean isTun, boolean hasCarrier, boolean bringUp,
-            LinkAddress[] linkAddrs, @Nullable String iface) {
+            boolean disableIpv6ProvisioningDelay, LinkAddress[] linkAddrs, @Nullable String iface) {
         enforceTestNetworkPermissions(mContext);
 
         Objects.requireNonNull(linkAddrs, "missing linkAddrs");
@@ -137,6 +137,14 @@
         try {
             ParcelFileDescriptor tunIntf = ParcelFileDescriptor.adoptFd(
                     nativeCreateTunTap(isTun, hasCarrier, interfaceName));
+
+            // Disable DAD and remove router_solicitation_delay before assigning link addresses.
+            if (disableIpv6ProvisioningDelay) {
+                mNetd.setProcSysNet(
+                        INetd.IPV6, INetd.CONF, interfaceName, "router_solicitation_delay", "0");
+                mNetd.setProcSysNet(INetd.IPV6, INetd.CONF, interfaceName, "dad_transmits", "0");
+            }
+
             for (LinkAddress addr : linkAddrs) {
                 mNetd.interfaceAddAddress(
                         interfaceName,