diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index d2529c38e7e4..fb3f917db57a 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -932,7 +932,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
 		}
 
 		if (tunnel->parms.iph.daddr)
-			skb_dst_update_pmtu(skb, mtu);
+			skb_dst_update_pmtu_no_confirm(skb, mtu);
 
 		if (skb->len > mtu && !skb_is_gso(skb)) {
 			icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu);