diff --git a/bpf/headers/include/bpf_map_def.h b/bpf/headers/include/bpf_map_def.h
index d67da48..e95ca5f 100644
--- a/bpf/headers/include/bpf_map_def.h
+++ b/bpf/headers/include/bpf_map_def.h
@@ -106,8 +106,12 @@
 // Here sizeof & __alignof__ are consistent, but _Alignof is not: compile for 'aosp_cf_x86_phone'
 _Static_assert(sizeof(unsigned long long) == 8, "sizeof unsigned long long != 8");
 _Static_assert(__alignof__(unsigned long long) == 8, "__alignof__ unsigned long long != 8");
-// BPF wants 8, but 32-bit x86 wants 4
-//_Static_assert(_Alignof(unsigned long long) == 8, "_Alignof unsigned long long != 8");
+// BPF & everyone else wants 8, but 32-bit x86 wants 4
+#if defined(__i386__)
+_Static_assert(_Alignof(unsigned long long) == 4, "x86-32 _Alignof unsigned long long != 4");
+#else
+_Static_assert(_Alignof(unsigned long long) == 8, "_Alignof unsigned long long != 8");
+#endif
 
 
 // for maps:
diff --git a/bpf/loader/NetBpfLoad.cpp b/bpf/loader/NetBpfLoad.cpp
index 04d7492..1e088a6 100644
--- a/bpf/loader/NetBpfLoad.cpp
+++ b/bpf/loader/NetBpfLoad.cpp
@@ -1490,6 +1490,11 @@
         if (!isTV()) return 1;
     }
 
+    if (isKernel32Bit() && isAtLeast25Q2) {
+        ALOGE("Android 25Q2 requires 64 bit kernel.");
+        return 1;
+    }
+
     // 6.6 is highest version supported by Android V, so this is effectively W+ (sdk=36+)
     if (isKernel32Bit() && isAtLeastKernelVersion(6, 7, 0)) {
         ALOGE("Android platform with 32 bit kernel version >= 6.7.0 is unsupported");
diff --git a/bpf/netd/BpfHandler.cpp b/bpf/netd/BpfHandler.cpp
index 6af7228..125f26b 100644
--- a/bpf/netd/BpfHandler.cpp
+++ b/bpf/netd/BpfHandler.cpp
@@ -318,7 +318,6 @@
     RETURN_IF_NOT_OK(mUidPermissionMap.init(UID_PERMISSION_MAP_PATH));
     // initialized last so mCookieTagMap.isValid() implies everything else is valid too
     RETURN_IF_NOT_OK(mCookieTagMap.init(COOKIE_TAG_MAP_PATH));
-    ALOGI("%s successfully", __func__);
 
     return netdutils::status::ok;
 }
diff --git a/framework/Android.bp b/framework/Android.bp
index a1c6a15..d6ee759 100644
--- a/framework/Android.bp
+++ b/framework/Android.bp
@@ -160,7 +160,10 @@
 java_defaults {
     name: "CronetJavaDefaults",
     srcs: [":httpclient_api_sources"],
-    static_libs: ["com.android.net.http.flags-aconfig-java"],
+    static_libs: [
+        "com.android.net.http.flags-aconfig-java",
+        "modules-utils-expresslog",
+    ],
     libs: [
         "androidx.annotation_annotation",
     ],
diff --git a/service/src/com/android/server/connectivity/NetworkAgentInfo.java b/service/src/com/android/server/connectivity/NetworkAgentInfo.java
index 2686e4a..e762a8e 100644
--- a/service/src/com/android/server/connectivity/NetworkAgentInfo.java
+++ b/service/src/com/android/server/connectivity/NetworkAgentInfo.java
@@ -1128,6 +1128,7 @@
         int delta = add ? +1 : -1;
         switch (request.type) {
             case REQUEST:
+            case RESERVATION:
                 mNumRequestNetworkRequests += delta;
                 break;
 
diff --git a/staticlibs/device/com/android/net/module/util/ServiceConnectivityJni.java b/staticlibs/device/com/android/net/module/util/ServiceConnectivityJni.java
index 4a5dd4f..1d3561a 100644
--- a/staticlibs/device/com/android/net/module/util/ServiceConnectivityJni.java
+++ b/staticlibs/device/com/android/net/module/util/ServiceConnectivityJni.java
@@ -17,8 +17,7 @@
 package com.android.net.module.util;
 
 import android.annotation.NonNull;
-
-import java.io.IOException;
+import android.system.ErrnoException;
 
 /**
  * Contains JNI functions for use in service-connectivity
@@ -38,17 +37,17 @@
     /**
      * Create a timerfd.
      *
-     * @throws IOException if the timerfd creation is failed.
+     * @throws ErrnoException if the timerfd creation is failed.
      */
-    public static native int createTimerFd() throws IOException;
+    public static native int createTimerFd() throws ErrnoException;
 
     /**
      * Set given time to the timerfd.
      *
      * @param timeMs target time
-     * @throws IOException if setting expiration time is failed.
+     * @throws ErrnoException if setting expiration time is failed.
      */
-    public static native void setTimerFdTime(int fd, long timeMs) throws IOException;
+    public static native void setTimerFdTime(int fd, long timeMs) throws ErrnoException;
 
     /** Create tun/tap interface */
     public static native int createTunTap(boolean isTun, boolean hasCarrier,
diff --git a/staticlibs/device/com/android/net/module/util/TimerFdUtils.java b/staticlibs/device/com/android/net/module/util/TimerFdUtils.java
index 10bc595..cce7efd 100644
--- a/staticlibs/device/com/android/net/module/util/TimerFdUtils.java
+++ b/staticlibs/device/com/android/net/module/util/TimerFdUtils.java
@@ -16,11 +16,9 @@
 
 package com.android.net.module.util;
 
-import android.os.Process;
+import android.system.ErrnoException;
 import android.util.Log;
 
-import java.io.IOException;
-
 /**
  * Contains mostly timerfd functionality.
  */
@@ -33,7 +31,7 @@
     static int createTimerFileDescriptor() {
         try {
             return ServiceConnectivityJni.createTimerFd();
-        } catch (IOException e) {
+        } catch (ErrnoException e) {
             Log.e(TAG, "createTimerFd failed", e);
             return -1;
         }
@@ -45,7 +43,7 @@
     static boolean setExpirationTime(int fd, long expirationTimeMs) {
         try {
             ServiceConnectivityJni.setTimerFdTime(fd, expirationTimeMs);
-        } catch (IOException e) {
+        } catch (ErrnoException e) {
             Log.e(TAG, "setExpirationTime failed", e);
             return false;
         }
diff --git a/staticlibs/device/com/android/net/module/util/netlink/NetlinkUtils.java b/staticlibs/device/com/android/net/module/util/netlink/NetlinkUtils.java
index 0d96fc4..2420e7a 100644
--- a/staticlibs/device/com/android/net/module/util/netlink/NetlinkUtils.java
+++ b/staticlibs/device/com/android/net/module/util/netlink/NetlinkUtils.java
@@ -497,4 +497,33 @@
             return false;
         }
     }
+
+    /**
+     * Sends a netlink request to set MTU for given interface
+     *
+     * @param interfaceName The name of the network interface to query.
+     * @param mtu MTU value to set for the interface.
+     * @return true if the request finished successfully, otherwise false.
+     */
+    public static boolean setInterfaceMtu(@NonNull String interfaceName, int mtu) {
+        if (mtu < 68) {
+            Log.e(TAG, "Invalid mtu: " + mtu + ", mtu should be greater than 68 referring RFC791");
+            return false;
+        }
+        final RtNetlinkLinkMessage ntMsg =
+                RtNetlinkLinkMessage.createSetMtuMessage(interfaceName, /*seqNo*/ 0, mtu);
+        if (ntMsg == null) {
+            Log.e(TAG, "Failed to create message to set MTU to " + mtu
+                    + "for interface " + interfaceName);
+            return false;
+        }
+        final byte[] msg = ntMsg.pack(ByteOrder.nativeOrder());
+        try {
+            NetlinkUtils.sendOneShotKernelMessage(NETLINK_ROUTE, msg);
+            return true;
+        } catch (ErrnoException e) {
+            Log.e(TAG, "Failed to set MTU to " + mtu + " for: " + interfaceName, e);
+            return false;
+        }
+    }
 }
diff --git a/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java b/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java
index f17a7ec..c19a124 100644
--- a/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java
+++ b/staticlibs/device/com/android/net/module/util/netlink/RtNetlinkLinkMessage.java
@@ -364,6 +364,37 @@
                 DEFAULT_MTU, /*hardwareAddress*/ null, /*interfaceName*/ null);
     }
 
+    /**
+     * Creates an {@link RtNetlinkLinkMessage} instance that can be used to set the MTU of a
+     * network interface.
+     *
+     * @param interfaceName The name of the network interface to query.
+     * @param sequenceNumber The sequence number for the Netlink message.
+     * @param mtu MTU value to set for the interface.
+     * @return An `RtNetlinkLinkMessage` instance representing the request to query the interface.
+     */
+    @Nullable
+    public static RtNetlinkLinkMessage createSetMtuMessage(@NonNull String interfaceName,
+            int sequenceNumber, int mtu) {
+        return createSetMtuMessage(
+            interfaceName, sequenceNumber, mtu, new OsAccess());
+    }
+
+    @VisibleForTesting
+    @Nullable
+    protected static RtNetlinkLinkMessage createSetMtuMessage(@NonNull String interfaceName,
+            int sequenceNumber, int mtu, @NonNull OsAccess osAccess) {
+        final int interfaceIndex = osAccess.if_nametoindex(interfaceName);
+        if (interfaceIndex == OsAccess.INVALID_INTERFACE_INDEX) {
+            return null;
+        }
+        return RtNetlinkLinkMessage.build(
+            new StructNlMsgHdr(/*payloadLen*/ 0, RTM_NEWLINK, NLM_F_REQUEST_ACK , sequenceNumber),
+            new StructIfinfoMsg((short) AF_UNSPEC, /*type*/ 0, interfaceIndex,
+                /*flags*/ 0, /*change*/ 0),
+            mtu, /*hardwareAddress*/ null, /*interfaceName*/ null);
+    }
+
     @Override
     public String toString() {
         return "RtNetlinkLinkMessage{ "
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/RtNetlinkLinkMessageTest.java b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/RtNetlinkLinkMessageTest.java
index b29fc73..13710b1 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/netlink/RtNetlinkLinkMessageTest.java
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/netlink/RtNetlinkLinkMessageTest.java
@@ -328,6 +328,28 @@
     }
 
     @Test
+    public void testCreateSetInterfaceMtuMessage() {
+        final String expectedHexBytes =
+                "280000001000050068240000000000000000000008000000"   // struct nlmsghdr
+                        + "000000000000000008000400DC050000"; // struct ifinfomsg
+        final String interfaceName = "wlan0";
+        final int interfaceIndex = 8;
+        final int sequenceNumber = 0x2468;
+        final int mtu = 1500;
+
+        when(mOsAccess.if_nametoindex(interfaceName)).thenReturn(interfaceIndex);
+
+        final RtNetlinkLinkMessage msg = RtNetlinkLinkMessage.createSetMtuMessage(
+                interfaceName,
+                sequenceNumber,
+                mtu,
+                mOsAccess);
+        assertNotNull(msg);
+        final byte[] bytes = msg.pack(ByteOrder.LITTLE_ENDIAN);  // For testing.
+        assertEquals(expectedHexBytes, HexDump.toHexString(bytes));
+    }
+
+    @Test
     public void testToString() {
         final ByteBuffer byteBuffer = toByteBuffer(RTM_NEWLINK_HEX);
         byteBuffer.order(ByteOrder.LITTLE_ENDIAN);  // For testing.