<p>Hi, still didn't have time to check how to reproduce this.<br>
Meanwhile, I've tried to move to mangler (to rewrite Contact) which upset other providers and finally wrote a simple base64 encoder for Contact header that fits the job (looks "normal" and does not have private IPs in it).<br>
This seems to make all providers happy until now.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/kamailio/kamailio/issues/1541#issuecomment-394442789">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/AF36ZTdoz3JB5Q8Mt1eWs-zI0c1L4ExMks5t5XRqgaJpZM4UJJGA">mute the thread</a>.<img src="https://github.com/notifications/beacon/AF36ZYiMj9lkw5dtthBvRjm9MD3bCBOjks5t5XRqgaJpZM4UJJGA.gif" height="1" width="1" alt="" /></p>
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