+ if (0xffff == ctx->preference)
+ {
+ /*
+ * not set a preference yet, so the first path we encounter
+ * sets the preference we are collecting.
+ */
+ ctx->preference = fib_path_get_preference(path_index);
+ }
+ else if (ctx->preference != fib_path_get_preference(path_index))
+ {
+ /*
+ * this path does not belong to the same preference as the
+ * previous paths encountered. we are done now.
+ */
+ return (FIB_PATH_LIST_WALK_STOP);
+ }