diff --git a/net/ipv6/addrlabel.c b/net/ipv6/addrlabel.c
index c7dc8b2de6c223193efff87bf954019b488f232a..7fdd433b968ec85c86577da89f040a8356b47552 100644
--- a/net/ipv6/addrlabel.c
+++ b/net/ipv6/addrlabel.c
@@ -437,6 +437,7 @@ static void ip6addrlbl_putmsg(struct nlmsghdr *nlh,
 {
 	struct ifaddrlblmsg *ifal = nlmsg_data(nlh);
 	ifal->ifal_family = AF_INET6;
+	ifal->__ifal_reserved = 0;
 	ifal->ifal_prefixlen = prefixlen;
 	ifal->ifal_flags = 0;
 	ifal->ifal_index = ifindex;