[IPV6] ADDRCONF: Don't generate temporary address for ip6-ip6 interface.

As far as I can remember, I was going to disable privacy extensions
on all "tunnel" interfaces.  Disable it on ip6-ip6 interface as well.

Also, just remove ifdefs for SIT for simplicity.
Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv6/addrconf.c

@@ -384,9 +384,8 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
 	setup_timer(&ndev->regen_timer, ipv6_regen_rndid, (unsigned long)ndev);
 	if ((dev->flags&IFF_LOOPBACK) ||
 	    dev->type == ARPHRD_TUNNEL ||
-#if defined(CONFIG_IPV6_SIT) || defined(CONFIG_IPV6_SIT_MODULE)
+	    dev->type == ARPHRD_TUNNEL6 ||
 	    dev->type == ARPHRD_SIT ||
-#endif
 	    dev->type == ARPHRD_NONE) {
 		printk(KERN_INFO
 		       "%s: Disabled Privacy Extensions\n",