diff --git a/examples/ipv6/rpl-udp/udp-client.c b/examples/ipv6/rpl-udp/udp-client.c
index 037408858..67e4de7e8 100644
--- a/examples/ipv6/rpl-udp/udp-client.c
+++ b/examples/ipv6/rpl-udp/udp-client.c
@@ -161,6 +161,10 @@ PROCESS_THREAD(udp_client_process, ev, data)
 
   /* new connection with remote host */
   client_conn = udp_new(NULL, UIP_HTONS(UDP_SERVER_PORT), NULL); 
+  if(client_conn == NULL) {
+    PRINTF("No UDP connection available, exiting the process!\n");
+    PROCESS_EXIT();
+  }
   udp_bind(client_conn, UIP_HTONS(UDP_CLIENT_PORT)); 
 
   PRINTF("Created a connection with the server ");
diff --git a/examples/ipv6/rpl-udp/udp-server.c b/examples/ipv6/rpl-udp/udp-server.c
index cbafb0da3..33f8cd761 100644
--- a/examples/ipv6/rpl-udp/udp-server.c
+++ b/examples/ipv6/rpl-udp/udp-server.c
@@ -152,6 +152,10 @@ PROCESS_THREAD(udp_server_process, ev, data)
   NETSTACK_MAC.off(1);
 
   server_conn = udp_new(NULL, UIP_HTONS(UDP_CLIENT_PORT), NULL);
+  if(server_conn == NULL) {
+    PRINTF("No UDP connection available, exiting the process!\n");
+    PROCESS_EXIT();
+  }
   udp_bind(server_conn, UIP_HTONS(UDP_SERVER_PORT));
 
   PRINTF("Created a server connection with remote address ");