fix PR #1169; itojun@ OK

src/etc/rc

@@ -1,4 +1,4 @@
-#	$OpenBSD: rc,v 1.134 2000/04/27 07:06:36 deraadt Exp $
+#	$OpenBSD: rc,v 1.135 2000/04/30 23:17:05 ericj Exp $
 
 # System startup script run by init on autoboot
 # or after single-user.
@@ -421,7 +421,7 @@ if ifconfig lo0 inet6 >/dev/null 2>&1; then
 			/usr/sbin/rtsold ${rtsold_flags}
 		fi
 
-		if [ "X${ip6defaultif}" != X"" ]; then
+		if [ "X${ip6defaultif}" != X"NO" ]; then
 			/usr/sbin/ndp -I ${ip6defaultif}
 		fi
 	else

src/etc/rc.conf

@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$OpenBSD: rc.conf,v 1.45 2000/04/21 21:27:34 deraadt Exp $
+#	$OpenBSD: rc.conf,v 1.46 2000/04/30 23:17:05 ericj Exp $
 
 # set these to "NO" to turn them off.  otherwise, they're used as flags
 routed_flags=NO		# for normal use: "-q"
@@ -19,7 +19,7 @@ mopd_flags=NO		# for normal use: "-a"
 httpd_flags=NO		# for normal use: "" (or "-DSSL" after reading ssl(8))
 apmd_flags=NO		# for normal use: ""
 dhcpd_flags=NO		# for normal use: "-q"
-ip6defaultif=""		# for normal use: ""
+ip6defaultif=NO		# for normal use: interface
 rtadvd_flags=NO		# for normal use: list of interfaces
 			# be sure to set net.inet6.ip6.forwarding=1
 route6d_flags=NO	# for normal use: ""