[Kamailio-Users] DNS lookup for requests within dialog

Hi all, I tested the following scenario: astreisk kamailio provider(hostname) --------------------> dns lookup --------------------> REGISTER 1 REGISTER 1 <-------------------- <-------------------- 401 401 --------------------> dns lookup --------------------> REGISTER 2 REGISTER 2 (same dialog, increased cseq) It seems that kamailio does dns lookup again when receiving REGISTER 2, although both registers are part of the same dialog. Is this the expected behavior? Thanks, Catalina