diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 1342be8..56ea928 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1267,10 +1267,11 @@
 	}
 
 	if (ndopts.nd_opts_mtu) {
+		__be32 n;
 		u32 mtu;
 
-		memcpy(&mtu, ((u8*)(ndopts.nd_opts_mtu+1))+2, sizeof(mtu));
-		mtu = ntohl(mtu);
+		memcpy(&n, ((u8*)(ndopts.nd_opts_mtu+1))+2, sizeof(mtu));
+		mtu = ntohl(n);
 
 		if (mtu < IPV6_MIN_MTU || mtu > skb->dev->mtu) {
 			ND_PRINTK2(KERN_WARNING