diff --git a/br-ext-chip-xiongmai/board/xm510/kernel/xm510.generic.config b/br-ext-chip-xiongmai/board/xm510/kernel/xm510.generic.config
index bd13674e..3e98c10e 100644
--- a/br-ext-chip-xiongmai/board/xm510/kernel/xm510.generic.config
+++ b/br-ext-chip-xiongmai/board/xm510/kernel/xm510.generic.config
@@ -602,7 +602,7 @@ CONFIG_NETDEVICES=y
 # CONFIG_DUMMY is not set
 # CONFIG_BONDING is not set
 # CONFIG_EQUALIZER is not set
-# CONFIG_TUN is not set
+CONFIG_TUN=y
 # CONFIG_VETH is not set
 CONFIG_MII=y
 CONFIG_PHYLIB=y
diff --git a/br-ext-chip-xiongmai/board/xm530/kernel/xm530.generic.config b/br-ext-chip-xiongmai/board/xm530/kernel/xm530.generic.config
index de52a988..14da9762 100644
--- a/br-ext-chip-xiongmai/board/xm530/kernel/xm530.generic.config
+++ b/br-ext-chip-xiongmai/board/xm530/kernel/xm530.generic.config
@@ -747,7 +747,7 @@ CONFIG_MII=y
 # CONFIG_NETCONSOLE is not set
 # CONFIG_NETPOLL is not set
 # CONFIG_NET_POLL_CONTROLLER is not set
-# CONFIG_TUN is not set
+CONFIG_TUN=y
 # CONFIG_VETH is not set
 
 #