I am using  kamailio-4.2.5 for testing setup. After starting the kamailio I am getting below message
/usr/local/sbin/kamailio -f /usr/local/etc/kamailio/kamailio.cfg -N 20 -m 512 -M 8
/usr/local/sbin/kamailio -f /usr/local/etc/kamailio/kamailio.cfg -E
loading modules under config path: /usr/local/lib64/kamailio/modules/
 0(24471) WARNING: <core> [socket_info.c:1392]: fix_hostname(): could not rev. resolve 192.168.1.118
 0(24471) WARNING: <core> [socket_info.c:1392]: fix_hostname(): could not rev. resolve 192.168.1.118
Listening on
             udp: 192.168.1.118:4060
             tcp: 192.168.1.118:4060
Aliases:

 0(24471) INFO: <core> [tcp_main.c:4748]: init_tcp(): using epoll_lt as the io watch method (auto detected)
 0(24473) INFO: rr [../outbound/api.h:54]: ob_load_api(): Failed to import bind_ob
 0(24473) INFO: rr [rr_mod.c:160]: mod_init(): outbound module not available
 0(24473) INFO: usrloc [hslot.c:53]: ul_init_locks(): locks array size 1024
 0(24473) INFO: <core> [udp_server.c:175]: probe_max_receive_buffer(): SO_RCVBUF is initially 212992
 0(24473) INFO: <core> [udp_server.c:225]: probe_max_receive_buffer(): SO_RCVBUF is finally 425984
 8(24481) INFO: ctl [io_listener.c:225]: io_listen_loop(): io_listen_loop:  using epoll_lt io watch method (config)