Fix netstart after autoconf6 change so 'rtsol' lines in hostname.if work again.

found by pelikan@; ok pelikan@ henning@

src/etc/netstart

@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$OpenBSD: netstart,v 1.140 2014/07/12 10:14:03 robert Exp $
+#	$OpenBSD: netstart,v 1.141 2014/07/12 14:39:31 stsp Exp $
 
 # Strip comments (and leading/trailing whitespace if IFS is set)
 # from a file and spew to stdout
@@ -243,12 +243,11 @@ ifmstart "trunk svlan vlan carp"
 
 if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then
 	fw=`sysctl -n net.inet6.ip6.forwarding`
-	ra=`sysctl -n net.inet6.ip6.accept_rtadv`
-	if [ "x$fw" = "x0" -a "x$ra" = "x1" ]; then
+	if [ "x$fw" = "x0" ]; then
 		echo "IPv6 autoconf:$rtsolif"
 		rtsol $rtsolif
 	else
-		echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf"
+		echo "IPv6 autoconf not supported while IPv6 forwarding is enabled"
 	fi
 fi