<p>I reopen this issue as the same happens on BYE requests.<br>
BYE requests (according to my understanding of RFC - page 161) doesn't require Contact header.</p>

<p>Do you mind adding METHOD_BYE in the condition? (it seems that Contact is only mandatory on INVITEs).</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/715#issuecomment-238544598">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/AF36ZTdu64amrbO1l6rO8Q7wjTCY6u6nks5qeHmkgaJpZM4JPM6L">mute the thread</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AF36ZaXzSTUhakiFgwKhqC7gaQW8PMkVks5qeHmkgaJpZM4JPM6L.gif" width="1" /></p>
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