networking - configuration OSPF in OpenBSD5.7 -

yesterday tried enable ospf routing on openbsd 5.7 . created "/etc/ospfd.conf" , added codes ( test )

router-id 127.0.0.1  area 0.0.0.0 {     interface em0 } 

but after type /etc/rc.d/ospfd -fd start got logs in terminal

doing _rc_parse_conf doing _rc_quirks ospfd_flags empty, using default >< doing _rc_read_runfile doing rc_check ospfd doing rc_start /etc/ospfd.conf: group writable or world read/writable doing _rc_rm_runfile (failed) 

can body tell me why got ? note : openbsd running under vitualbox4.3 , host system fedora22

/etc/ospfd.conf: group writable or world read/writable

means have not correct rights file.

chmod 640 /etc/ospfd.conf 

must help.