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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi Guys:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> We have not used the ACMEs SIP Dynamic HNT feature, where the ACME sends OPTIONS msgs to individual endpoints on its Access side and adjusts their expires times as per individual Firewalls that they are behind.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>While it sounds cool, I was wondering if folks have noticed issues with using it given that some endpoints out there don’t even honor the Expires header from REGISTRARs and as the ACME determines the correct NAT interval automatically, it may leave some endpoints de-registers for small intervals (as per ACME ACLI guide).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thx for your input<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>UK<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>