bin/54481: dhcpd does not stop unless issued with SIGKILL

[venture73%geeklan.co.uk@localhost]

>Number:         54481
>Category:       bin
>Synopsis:       dhcpd does not stop unless issued with SIGKILL
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Aug 18 14:10:00 +0000 2019
>Originator:     Sevan Janiyan
>Release:        HEAD
>Organization:
>Environment:
NetBSD 9.99.9 (GENERIC) #0: Sat Aug 17 09:44:01 UTC 2019  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/i386/compile/GENERIC i386
>Description:
Attempting to stop dhcpd via rc script results in a hang (script sleeps) and issuing a TERM signal to the dhcp process has no result.
Only way to stop dhcpd is to issue a KILL signl
The issue been around for some months so it's not a recent development.
>How-To-Repeat:
cp /usr/share/examples/dhcp/dhcpd.conf /etc
ifconfig fxp0 10.152.187.1/24 up
service dhcpd onestart
service dhcpd onerestart

>Fix: