<p>I made this kind of patch and it seems to work in my tests, but I may have missed something.</p>
<pre><code>unsigned int node_in_set(struct rtpp_node *node, struct rtpp_set *set) {
        struct rtpp_node *current = set->rn_first;
        while (current) {
                if (current->idx == node->idx) return 1;
                current = current->rn_next;
        }
        return 0;
}
</code></pre>
<pre><code>static struct rtpp_node * select_rtpp_node(...) {
...
       // lookup node
        node = select_rtpp_node_old(callid, viabranch, do_test, op);

        // check node
        if (!node || (node_in_set(node, active_rtpp_set) == 0)) {
        ...
</code></pre>

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