diff --git a/examples/sleepy-demo/sleepy-ftd.c b/examples/sleepy-demo/sleepy-ftd.c
index abf93f40..23b16047 100644
--- a/examples/sleepy-demo/sleepy-ftd.c
+++ b/examples/sleepy-demo/sleepy-ftd.c
@@ -141,7 +141,7 @@ void initUdp(void)
     }
 
     // Bind to the socket. Close the socket if bind fails.
-    error = otUdpBind(otGetInstance(), &sFtdSocket, &bindAddr, OT_NETIF_THREAD);
+    error = otUdpBind(otGetInstance(), &sFtdSocket, &bindAddr, OT_NETIF_THREAD_INTERNAL);
     if (error != OT_ERROR_NONE)
     {
         otCliOutputFormat("FTD failed to bind udp multicast with: %d, %s\r\n", error, otThreadErrorToString(error));
diff --git a/examples/sleepy-demo/sleepy-mtd.c b/examples/sleepy-demo/sleepy-mtd.c
index 3d72b512..c9ba879f 100644
--- a/examples/sleepy-demo/sleepy-mtd.c
+++ b/examples/sleepy-demo/sleepy-mtd.c
@@ -175,7 +175,7 @@ void initUdp(void)
     }
 
     // Bind to the socket. Close the socket if bind fails.
-    error = otUdpBind(otGetInstance(), &sMtdSocket, &bindAddr, OT_NETIF_THREAD);
+    error = otUdpBind(otGetInstance(), &sMtdSocket, &bindAddr, OT_NETIF_THREAD_INTERNAL);
     if (error != OT_ERROR_NONE)
     {
         otCliOutputFormat("MTD failed to bind udp socket with: %d, %s\r\n", error, otThreadErrorToString(error));
diff --git a/examples/sleepy-demo/sleepy-ssed.c b/examples/sleepy-demo/sleepy-ssed.c
index 38c862b3..0a1e9092 100644
--- a/examples/sleepy-demo/sleepy-ssed.c
+++ b/examples/sleepy-demo/sleepy-ssed.c
@@ -180,7 +180,7 @@ void initUdp(void)
     }
 
     // Bind to the socket. Close the socket if bind fails.
-    error = otUdpBind(otGetInstance(), &sSsedSocket, &bindAddr, OT_NETIF_THREAD);
+    error = otUdpBind(otGetInstance(), &sSsedSocket, &bindAddr, OT_NETIF_THREAD_INTERNAL);
     if (error != OT_ERROR_NONE)
     {
         otCliOutputFormat("SSED failed to bind udp socket with: %d, %s\r\n", error, otThreadErrorToString(error));
diff --git a/openthread b/openthread
index ae5b750d..473af531 160000
--- a/openthread
+++ b/openthread
@@ -1 +1 @@
-Subproject commit ae5b750d304466de8cb43664969881787a94742f
+Subproject commit 473af53155ec336d843e083cd6b70a7046560caa