--- zzzz-none-000/linux-4.4.60/net/ipv4/igmp.c	2017-04-08 07:53:53.000000000 +0000
+++ wasp-540e-714/linux-4.4.60/net/ipv4/igmp.c	2019-07-03 09:21:34.000000000 +0000
@@ -505,7 +505,7 @@
 		if (!skb)
 			return NULL;
 		psrc = (__be32 *)skb_put(skb, sizeof(__be32));
-		*psrc = psf->sf_inaddr;
+		net_hdr_word(psrc) = psf->sf_inaddr;
 		scount++; stotal++;
 		if ((type == IGMPV3_ALLOW_NEW_SOURCES ||
 		     type == IGMPV3_BLOCK_OLD_SOURCES) && psf->sf_crcount) {