<p>It looks that the musl library did not added this T_OPT define yet, all others (T_A, T_AAAA) are there: <a href="https://git.musl-libc.org/cgit/musl/tree/include/arpa/nameser.h" rel="nofollow">link</a>.<br>
I don't want to change the complete implementation just for a bug fix, this might have some other side-effects as well for other distributions and/or libraries.</p>
<p>Can you check if it works now with commit <a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/kamailio/kamailio/commit/cec1043a9c4daa39b4245b87f28fb5566e8627bd/hovercard" href="https://github.com/kamailio/kamailio/commit/cec1043a9c4daa39b4245b87f28fb5566e8627bd"><tt>cec1043</tt></a></p>

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