misc/51959: /etc/rc.d/dhcpcd can't find its pid file

[uwe%NetBSD.org@localhost]

>Number:         51959
>Category:       misc
>Synopsis:       /etc/rc.d/dhcpcd can't find its pid file
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    misc-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Feb 07 11:50:00 +0000 2017
>Originator:     Valery Ushakov
>Release:        NetBSD-7.0.1
>Organization:
>Environment:
>Description:
/etc/rc.d/dhcpcd tries to figure out the pid file name:

    /var/run/dhcpcd-"$ifname".pid
or
    /var/run/dhcpcd.pid

depending on whether the interface is specified in dhcpcd_flags.

Unfortunately, sysinst configures dhcpcd_flags with -M (master):

    add_rc_conf("dhcpcd_flags=\"-qM %s\"\n", net_dev);

and in that case dhcpcd uses "global" pidfile, not -interface specific
pidfile.

As the result e.g.

    /etc/rc.d/dhcpcd stop

does not work.

>How-To-Repeat:

>Fix: