2010/6/22 Xiaoqiang Hu xhu@redhat.com:
Hi all,
SIPv6 UA Can't receive a 420 (Bad Extension) response from openser register server after sending Registrar with Non-supported option-tag in Require filed. The details can be as follows:
Have you tryed with kamailio 1.5 or 3.X? openser is 2-3 years old.