Enable slaacd(8) by default and disable router solicitation and

advertisement processing in the kernel.
Go for it!!! deraadt@
additional encouragement to push forward from at least mpi and henning
special thanks to naddy for being an early adopter and finding bugs.

src/etc/rc.conf

@@ -1,4 +1,4 @@
-#	$OpenBSD: rc.conf,v 1.214 2017/05/29 10:24:06 florian Exp $
+#	$OpenBSD: rc.conf,v 1.215 2017/05/30 08:58:34 florian Exp $
 
 # DO NOT EDIT THIS FILE!!
 #
@@ -57,7 +57,7 @@ rtadvd_flags=NO		# for normal use: list of interfaces
 			# be sure to set net.inet6.ip6.forwarding=1
 sasyncd_flags=NO
 sensorsd_flags=NO
-slaacd_flags=NO
+slaacd_flags=
 slowcgi_flags=NO
 smtpd_flags=
 sndiod_flags=