diff --git a/configs/lc823450-xgevk/src/lc823450_bringup.c b/configs/lc823450-xgevk/src/lc823450_bringup.c
index dcc52f207cc..b6f35319528 100644
--- a/configs/lc823450-xgevk/src/lc823450_bringup.c
+++ b/configs/lc823450-xgevk/src/lc823450_bringup.c
@@ -118,7 +118,7 @@ int lc823450_bringup(void)
 
 #if defined(CONFIG_RNDIS) && defined(CONFIG_NSH_MACADDR)
   uint8_t mac[6];
-  mac[0] = 0xaa; /* TODO */
+  mac[0] = 0xa0; /* TODO */
   mac[1] = (CONFIG_NSH_MACADDR >> (8 * 4)) & 0xff;
   mac[2] = (CONFIG_NSH_MACADDR >> (8 * 3)) & 0xff;
   mac[3] = (CONFIG_NSH_MACADDR >> (8 * 2)) & 0xff;
diff --git a/configs/stm32f4discovery/src/stm32_bringup.c b/configs/stm32f4discovery/src/stm32_bringup.c
index 345a2a67448..e107a04be74 100644
--- a/configs/stm32f4discovery/src/stm32_bringup.c
+++ b/configs/stm32f4discovery/src/stm32_bringup.c
@@ -429,7 +429,7 @@ int stm32_bringup(void)
 
 #if defined(CONFIG_RNDIS) && defined(CONFIG_NSH_MACADDR)
   uint8_t mac[6];
-  mac[0] = 0xaa; /* TODO */
+  mac[0] = 0xa0; /* TODO */
   mac[1] = (CONFIG_NSH_MACADDR >> (8 * 4)) & 0xff;
   mac[2] = (CONFIG_NSH_MACADDR >> (8 * 3)) & 0xff;
   mac[3] = (CONFIG_NSH_MACADDR >> (8 * 2)) & 0xff;
diff --git a/configs/viewtool-stm32f107/src/stm32_max3421e.c b/configs/viewtool-stm32f107/src/stm32_max3421e.c
index 0cd562955bf..661381980df 100644
--- a/configs/viewtool-stm32f107/src/stm32_max3421e.c
+++ b/configs/viewtool-stm32f107/src/stm32_max3421e.c
@@ -368,7 +368,7 @@ int stm32_max3421e_setup(void)
   {
     uint8_t mac[6];
 
-    mac[0] = 0xaa; /* TODO */
+    mac[0] = 0xa0; /* TODO */
     mac[1] = (CONFIG_NSH_MACADDR >> (8 * 4)) & 0xff;
     mac[2] = (CONFIG_NSH_MACADDR >> (8 * 3)) & 0xff;
     mac[3] = (CONFIG_NSH_MACADDR >> (8 * 2)) & 0xff;