interfaces: keep dhcp6 config, seems to have been a typo

src/etc/config.xml.sample

@@ -234,22 +234,22 @@
   </system>
   <interfaces>
     <wan>
-      <enable/>
+      <enable>1</enable>
       <if>mismatch1</if>
       <mtu/>
       <ipaddr>dhcp</ipaddr>
       <ipaddrv6>dhcp6</ipaddrv6>
       <subnet/>
       <gateway/>
-      <blockpriv/>
-      <blockbogons/>
+      <blockpriv>1</blockpriv>
+      <blockbogons>1</blockbogons>
       <dhcphostname/>
       <media/>
       <mediaopt/>
       <dhcp6-ia-pd-len>0</dhcp6-ia-pd-len>
     </wan>
     <lan>
-      <enable/>
+      <enable>1</enable>
       <if>mismatch0</if>
       <ipaddr>192.168.1.1</ipaddr>
       <subnet>24</subnet>

src/etc/inc/console.inc

@@ -366,7 +366,7 @@ EOD;
 		$config['interfaces']['wan']['if'] = $wanif;
 		$config['interfaces']['wan']['enable'] = true;
 		$config['interfaces']['wan']['ipaddr'] = 'dhcp';
-		$config['interfaces']['wan']['ipaddrv6'] = 'dhcpv6';
+		$config['interfaces']['wan']['ipaddrv6'] = 'dhcp6';
 		$config['interfaces']['wan']['blockbogons'] = true;
 		if ($lanif) {
 			$config['interfaces']['wan']['blockpriv'] = true;