Link entry for neighbour (ARMmbed#1749)

write link entry in advertisement only if a valid short
address exists for the neighbour.

Author: deepakvenugopal

source/6LoWPAN/Bootstraps/Generic/protocol_6lowpan_bootstrap.c

@@ -421,7 +421,7 @@ static uint8_t *mle_table_set_neighbours(protocol_interface_info_entry_t *cur, u
 
             loop_list = false;
 
-            if ((cur_entry->connected_device) && (cur_entry->advertisment == false)) {
+            if ((cur_entry->connected_device) && (cur_entry->advertisment == false) && (cur_entry->mac16 < 0xfffe)) {
 
                 // If looping list, stops adding entries when at first sent entry again
                 if (first_entry_ptr == cur_entry) {