diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index b3515a4f13039fffde865a3a47862e1112fd508a..1f2d0022ba6fdd27f66627d2f3fae944065be453 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -2218,6 +2218,7 @@ static void ip6erspan_tap_setup(struct net_device *dev)
 {
 	ether_setup(dev);
 
+	dev->max_mtu = 0;
 	dev->netdev_ops = &ip6erspan_netdev_ops;
 	dev->needs_free_netdev = true;
 	dev->priv_destructor = ip6gre_dev_free;