dhcpd update doesn't restart service

[Dave]

Hello,
    I ran portupgrade on a 6.1 box. One of the ports needing updating was 
isc-dhcpd it was v3.0.4 now at 3.0.5. I ran this update on two boxes, one 
went fine, but on the other the service was not restarted. In my 
pkgtools.conf file i do have the line needed to restart services after an 
update. I was wondering how to set up a service so that if it died it would 
be restarted? I know about inetd, but i didn't think dhcpd could run out of 
it.
Thanks.
Dave.