<p>I don't think it's a work around but rather a way of handling RFC 3261 via strict adhesion or lessened for non-compliant UAs, etc as described in <a href="http://kamailio.org/docs/modules/stable/modules/usrloc.html#contact-matching-algs">http://kamailio.org/docs/modules/stable/modules/usrloc.html#contact-matching-algs</a></p>

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