Hi all,

i have a strange problem: i configured a basic IMS infrastructure Kamailio-based, with a DNS server (bind9) running on a virtual machine with IP address 192.168.100.55. Whenever i try to register a user, the first registration almost always fails, while the second is successful. I attached my dnszone config used with bind9 and the pcaps of the 2 regs; my questions are

- is the IMS dnszone configuration correct?
- the problems i got are just due to latency issues or have i misconfigured something?

Regards,

Andrea