i noticed that debian jessie systemd is highjacking
/etc/init.d/kamailio status
action. It can be prevented by including
_SYSTEMCTL_SKIP_REDIRECT=true
in the beginning of the script.
that does not matter except that console messages are missing, but if
someone wants to have a more sophisticated status check, e.g., check
that kamailio processes not only exist, but are also able to process sip
requests, then the above statement is needed.
-- juha