--- zzzz-none-000/linux-4.4.60/include/net/inet_ecn.h	2017-04-08 07:53:53.000000000 +0000
+++ dragonfly-4020-701/linux-4.4.60/include/net/inet_ecn.h	2018-11-08 13:36:17.000000000 +0000
@@ -126,7 +126,8 @@
 
 	from = *(__be32 *)iph;
 	to = from | htonl(INET_ECN_CE << 20);
-	*(__be32 *)iph = to;
+	net_hdr_word(iph) |= htonl(INET_ECN_CE << 20);
+
 	if (skb->ip_summed == CHECKSUM_COMPLETE)
 		skb->csum = csum_add(csum_sub(skb->csum, from), to);
 	return 1;
@@ -134,7 +135,7 @@
 
 static inline void IP6_ECN_clear(struct ipv6hdr *iph)
 {
-	*(__be32*)iph &= ~htonl(INET_ECN_MASK << 20);
+	net_hdr_word(iph) &= ~htonl(INET_ECN_MASK << 20);
 }
 
 static inline void ipv6_copy_dscp(unsigned int dscp, struct ipv6hdr *inner)