From 581db174b2bc60788344cd4163326ab95099d20b Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Wed, 30 Aug 2017 10:29:14 -0600
Subject: [PATCH] Networking:  socket dup() conditional operation was missing
 the test for the condition.

---
 net/socket/net_clone.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/socket/net_clone.c b/net/socket/net_clone.c
index a22c1c7ea13..4717e42294c 100644
--- a/net/socket/net_clone.c
+++ b/net/socket/net_clone.c
@@ -118,7 +118,10 @@ int net_clone(FAR struct socket *psock1, FAR struct socket *psock2)
    * is lost.
    */
 
-  ret = tcp_start_monitor(psock2);
+  if (psock2->s_type == SOCK_STREAM)
+    {
+      ret = tcp_start_monitor(psock2);
+    }
 #endif
 
   net_unlock();