<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">I discussed this with Alex Balashov off-line, and he answered my questions:<div class=""><br class=""></div><div class=""><div><blockquote type="cite" class=""><div class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><br class=""></div><div class=""><ol class="MailOutline"><li class="">A flag of 3, I don’t understand. I read the <a href="http://kamailio.org/docs/modules/4.4.x/modules/nathelper.html#nathelper.f.nat_uac_test" class="">documentation</a>, and there is a 1,2,4,8,etc… So, I’m guessing that a flag of 3, means 1+2?</li></ol></div></div></div></blockquote><div><br class=""></div><div>Yes, apparently this is a bit array: <a href="https://en.wikipedia.org/wiki/Bit_array" class="">https://en.wikipedia.org/wiki/Bit_array</a> and a value of 3 = 1+2.</div><br class=""><blockquote type="cite" class=""><div class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><ol class="MailOutline" start="2"><li class="">If #1 is true, then "the "received" test is used: address in the “Via” header is compared against source IP address of signaling”</li><ol class=""><li class="">I don’t understand this test, as I’m pretty sure that the 200OK that’s getting re-written is properly constructed. I guess I’m trying to understand when one would want to use this test?</li></ol></ol></div></div></div></blockquote><div><br class=""></div><div>Although we weren’t able to come up with an example for this test, it does not seem to apply to my environment. Updating the flag to 1 solves my issue.</div><div><br class=""></div><div>Thanks!</div><div><br class=""></div><div>~Noah</div></div></div></body></html>