diff --git a/wifi/1.5/default/wifi_ap_iface.cpp b/wifi/1.5/default/wifi_ap_iface.cpp
index b438a4a..1ae7905 100644
--- a/wifi/1.5/default/wifi_ap_iface.cpp
+++ b/wifi/1.5/default/wifi_ap_iface.cpp
@@ -136,24 +136,25 @@
 
 WifiStatus WifiApIface::setMacAddressInternal(
     const std::array<uint8_t, 6>& mac) {
-    bool status;
     // Support random MAC up to 2 interfaces
     if (instances_.size() == 2) {
         int rbyte = 1;
         for (auto const& intf : instances_) {
             std::array<uint8_t, 6> rmac = mac;
-            // reverse the bits to avoid clision
+            // reverse the bits to avoid collision
             rmac[rbyte] = 0xff - rmac[rbyte];
-            status = iface_util_.lock()->setMacAddress(intf, rmac);
-            if (!status) {
+            if (!iface_util_.lock()->setMacAddress(intf, rmac)) {
                 LOG(INFO) << "Failed to set random mac address on " << intf;
+                return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
             }
             rbyte++;
         }
-    } else {
-        status = iface_util_.lock()->setMacAddress(ifname_, mac);
     }
-    if (!status) {
+    // It also needs to set mac address for bridged interface, otherwise the mac
+    // address of bridged interface will be changed after one of instance
+    // down.
+    if (!iface_util_.lock()->setMacAddress(ifname_, mac)) {
+        LOG(ERROR) << "Fail to config MAC for interface " << ifname_;
         return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
     }
     return createWifiStatus(WifiStatusCode::SUCCESS);
@@ -181,6 +182,18 @@
                 return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
             }
         }
+        // It needs to set mac address for bridged interface, otherwise the mac
+        // address of the bridged interface will be changed after one of the
+        // instance down. Thus we are generating a random MAC address for the
+        // bridged interface even if we got the request to reset the Factory
+        // MAC. Since the bridged interface is an internal interface for the
+        // operation of bpf and others networking operation.
+        if (!iface_util_.lock()->setMacAddress(
+                ifname_, iface_util_.lock()->createRandomMacAddress())) {
+            LOG(ERROR) << "Fail to config MAC for bridged interface "
+                       << ifname_;
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+        }
     } else {
         getMacResult = getFactoryMacAddressInternal(ifname_);
         LOG(DEBUG) << "Reset MAC to factory MAC on " << ifname_;
diff --git a/wifi/1.5/default/wifi_iface_util.cpp b/wifi/1.5/default/wifi_iface_util.cpp
index d1434e3..7bf830b 100644
--- a/wifi/1.5/default/wifi_iface_util.cpp
+++ b/wifi/1.5/default/wifi_iface_util.cpp
@@ -86,9 +86,9 @@
         event_handlers.on_state_toggle_off_on(iface_name);
     }
     if (!success) {
-        LOG(ERROR) << "SetMacAddress failed.";
+        LOG(ERROR) << "SetMacAddress failed on " << iface_name;
     } else {
-        LOG(DEBUG) << "SetMacAddress succeeded.";
+        LOG(DEBUG) << "SetMacAddress succeeded on " << iface_name;
     }
     return success;
 }
diff --git a/wifi/1.5/default/wifi_iface_util.h b/wifi/1.5/default/wifi_iface_util.h
index b449077..544f575 100644
--- a/wifi/1.5/default/wifi_iface_util.h
+++ b/wifi/1.5/default/wifi_iface_util.h
@@ -71,10 +71,10 @@
 
     virtual bool removeIfaceFromBridge(const std::string& br_name,
                                        const std::string& if_name);
+    // Get a random MAC address.
+    virtual std::array<uint8_t, 6> createRandomMacAddress();
 
    private:
-    std::array<uint8_t, 6> createRandomMacAddress();
-
     std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
     std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
     std::unique_ptr<std::array<uint8_t, 6>> random_mac_address_;