Is it possible you have a default OS 'iptables' configuration that is blocking receipt of the packet by Kamailio at the application layer?

Please check/feel free to send the output of: iptables -L -n

--
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
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Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
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