[    2.053758] ip (293) used greatest stack depth: 12248 bytes left
[   12.160939] mpls_gso: MPLS GSO support
[  660.919007] blackhole_netdev_xmit(): Dropping skb.
[  660.919079] blackhole_netdev_xmit(): Dropping skb.
[  660.919135] blackhole_netdev_xmit(): Dropping skb.
[  660.919188] blackhole_netdev_xmit(): Dropping skb.