<p></p>
<p>Thanks for the pull request. This should already taken care of it in the current versions:</p>
<p>/*</p>
<ul>
<li>Older glibc < 2.25 does not include T_OPT in nameser_compat.h yet.</li>
<li>On alpine linux musl library it is also not defined. There is no</li>
<li>musl feature test macro, so we look for glibc instead.<br>
*/<br>
#if (defined <strong>GLIBC</strong> &&  <strong>GLIBC</strong> == 2 && <strong>GLIBC_MINOR</strong> < 25) || !defined <strong>GLIBC</strong><br>
#ifndef T_OPT<br>
#define T_OPT ns_t_opt<br>
#endif<br>
#endif</li>
</ul>
<p>~/repositories/kamailio/src/core$ ack ns_t_opt /usr/include/arpa/nameser.h<br>
ns_t_opt = 41,</p>

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