Use RPL parent soft filtering only after bootstrap.

Change-Id: I30a5140417bfc27f00d578f6ead00e2dc7052e69

Author: Juha Heiskanen

source/6LoWPAN/ws/ws_bootstrap.c

@@ -2119,6 +2119,11 @@ static void ws_rpl_prefix_callback(prefix_entry_t *prefix, void *handle, uint8_t
 
 static bool ws_rpl_candidate_soft_filtering(protocol_interface_info_entry_t *cur, struct rpl_instance *instance)
 {
+    //If bootstrap active we not need any candidate filtering
+    if ((cur->lowpan_info & INTERFACE_NWK_BOOTSRAP_ACTIVE)) {
+        return true;
+    }
+
     //Already many candidates
     if (rpl_control_candidate_list_size(cur, instance) > cur->ws_info->rpl_parent_candidate_max) {
         return false;