+ key.as_u64[0] = kvp->key[0];
+ key.as_u64[1] = kvp->key[1];
+
+ if (ip6_destination_matches_route(&ip6_main,
+ &key,
+ &ctx->i6w_root.fp_addr.ip6,
+ ctx->i6w_root.fp_len))
+ {
+ const fib_prefix_t *sub_tree;
+ int skip = 0;
+
+ /*
+ * exclude sub-trees the walk does not want to explore
+ */
+ vec_foreach(sub_tree, ctx->i6w_sub_trees)
+ {
+ if (ip6_destination_matches_route(&ip6_main,
+ &key,
+ &sub_tree->fp_addr.ip6,
+ sub_tree->fp_len))
+ {
+ skip = 1;
+ break;
+ }
+ }
+
+ if (!skip)
+ {
+ switch (ctx->i6w_fn(kvp->value, ctx->i6w_ctx))
+ {
+ case FIB_TABLE_WALK_CONTINUE:
+ break;
+ case FIB_TABLE_WALK_SUB_TREE_STOP: {
+ fib_prefix_t pfx = {
+ .fp_proto = FIB_PROTOCOL_IP6,
+ .fp_len = kvp->key[2] & 0xffffffff,
+ .fp_addr.ip6 = key,
+ };
+ vec_add1(ctx->i6w_sub_trees, pfx);
+ break;
+ }
+ case FIB_TABLE_WALK_STOP:
+ goto done;
+ }
+ }
+ }