install/53018: missing /etc/rc.d/dhcpd6 file after upgrade

[paul%whooppee.com@localhost]

>Number:         53018
>Category:       install
>Synopsis:       missing /etc/rc.d/dhcpd6 file after upgrade
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 12 22:40:00 +0000 2018
>Originator:     Paul Goyette
>Release:        NetBSD 8.99.12
>Organization:
+------------------+--------------------------+----------------------------+
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:          |
| (Retired)        | FA29 0E3B 35AF E8AE 6651 | paul at whooppee dot com   |
| Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd dot org |
+------------------+--------------------------+----------------------------+
>Environment:
	
	
System: NetBSD speedy.whooppee.com 8.99.12 NetBSD 8.99.12 (SPEEDY 2018-02-12 00:00:12 UTC) #3: Mon Feb 12 06:57:12 UTC 2018 paul%speedy.whooppee.com@localhost:/build/netbsd-local/obj/amd64/sys/arch/amd64/compile/SPEEDY amd64
Architecture: x86_64
Machine: amd64
>Description:
After a recent upgrade from 8.99.7 --> 8.99.12, the /etc/security
script is reporting a missing file:

	...
	Checking special files and directories.
	./etc/rc.d/dhcpd6 missing
	...

I have succcessfully run both postinstall and etcupdate, neither of
which complains about this file.  The file is listed in the
/etc/mtree/special file, but without the optional flag that other
related files (such as /etc/dhcpcd.{duid,hook} and /etc/dhcpcd6.conf)
have.  Therefore, even though the file is not installed, the daily
/etc/security script expects the file to exist.
	
>How-To-Repeat:
See above - upgrade to 8.99.12 and run the daily /etc/security script.
	
>Fix:
Perhaps it is as simple as adding the "optional" flag to the entry in
/etc/mtree/special specification file?  Or perhaps the file should be
properly installed, and its absence detected (and fixed) by either
postinstall or etcupdate?
	

>Unformatted: