1 files changed, 1 insertions, 0 deletions

diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 36f7dbfb6dbb..67997a74ddce 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1037,6 +1037,7 @@ static void ndisc_ra_useropt(struct sk_buff *ra, struct nd_opt_hdr *opt)
 
         ndmsg = nlmsg_data(nlh);
         ndmsg->nduseropt_family = AF_INET6;
+        ndmsg->nduseropt_ifindex = ra->dev->ifindex;
         ndmsg->nduseropt_icmp_type = icmp6h->icmp6_type;
         ndmsg->nduseropt_icmp_code = icmp6h->icmp6_code;
         ndmsg->nduseropt_opts_len = opt->nd_opt_len << 3;