<p><b>@kaspar030</b> approved this pull request.</p>

<p>ACK.</p>
<pre><code>[kaspar@ng riot.tmp (pr11780)]$ git grep gnrc_pktbuf_duplicate_upto
LOSTANDFOUND.md:### gnrc_pktbuf_duplicate_upto() [b83430aa625a1d42f11f9badf5e5cfbb8efacd99]
[kaspar@ng riot.tmp (pr11780)]$ 
</code></pre>

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