--- zzzz-none-000/linux-4.4.271/include/net/ndisc.h	2021-06-03 06:22:09.000000000 +0000
+++ hawkeye-5590-750/linux-4.4.271/include/net/ndisc.h	2023-04-19 10:22:30.000000000 +0000
@@ -76,7 +76,7 @@
         struct icmp6hdr		icmph;
 	__be32			reachable_time;
 	__be32			retrans_timer;
-};
+} __attribute__((packed, aligned(2)));
 
 struct rd_msg {
 	struct icmp6hdr icmph;
@@ -148,10 +148,10 @@
 {
 	const u32 *p32 = pkey;
 
-	return (((p32[0] ^ hash32_ptr(dev)) * hash_rnd[0]) +
-		(p32[1] * hash_rnd[1]) +
-		(p32[2] * hash_rnd[2]) +
-		(p32[3] * hash_rnd[3]));
+	return (((net_hdr_word(&p32[0]) ^ hash32_ptr(dev)) * hash_rnd[0]) +
+		(net_hdr_word(&p32[1]) * hash_rnd[1]) +
+		(net_hdr_word(&p32[2]) * hash_rnd[2]) +
+		(net_hdr_word(&p32[3]) * hash_rnd[3]));
 }
 
 static inline struct neighbour *__ipv6_neigh_lookup_noref(struct net_device *dev, const void *pkey)