bin/55170: dhcpcd fails when used instead of rtsol

[kim%netbsd.org@localhost (Kimmo Suominen)]

>Number:         55170
>Category:       bin
>Synopsis:       dhcpcd fails when used instead of rtsol
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Apr 13 15:30:00 +0000 2020
>Originator:     kim%netbsd.org@localhost (Kimmo Suominen)
>Release:        NetBSD 9.99.54
>Organization:
>Environment:
System: NetBSD chronologie.x.gw.fi 9.99.54 NetBSD 9.99.54 (GENERIC) #0: Sun Apr 5 22:53:36 EEST 2020 kim%chronologie.x.gw.fi@localhost:/p/netbsd/cvs/src/sys/arch/amd64/compile/obj.amd64/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:
	The rtsol(8) manual page advises to use dhcpcd(8) instead.  However,
	it doesn't look like the suggested invocation works: error messages
	are output and dhcpcd exits with exit code 1.  Furthermore, tcpdump
	shows no router solicitation packets sent out.

	It would be nice if there was also a more quiet way of using dhcpcd
	as rtsol -- preferably silent except for errors.  Adding the "-q"
	switch results in just as much output as without it.
>How-To-Repeat:
	# dhcpcd -dB6T --nodhcp6 vioif0
	dhcpcd-9.0.0 starting
	executing `/libexec/dhcpcd-run-hooks' CHROOT
	spawned privileged actioneer on PID 11855
	spawned network proxy on PID 930
	main: control_start: No such file or directory
	dhcpcd exited
	Exit 1
>Fix: