diff --git a/net/rds/send.c b/net/rds/send.c
index 1afa981e5c06..38b9cc9e0d20 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -1342,7 +1342,8 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
 	/* rds_conn_create has a spinlock that runs with IRQ off.
 	 * Caching the conn in the socket helps a lot. */
 	if (rs->rs_conn && ipv6_addr_equal(&rs->rs_conn->c_faddr, &daddr) &&
-	    rs->rs_tos == rs->rs_conn->c_tos) {
+	    rs->rs_tos == rs->rs_conn->c_tos &&
+	    rs->rs_conn->c_dev_if == scope_id) {
 		conn = rs->rs_conn;
 	} else {
 		conn = rds_conn_create_outgoing(sock_net(sock->sk),