[    1.952751] ip (295) used greatest stack depth: 12248 bytes left
[   11.557714] mpls_gso: MPLS GSO support
[  321.965336] ip (26621) used greatest stack depth: 12080 bytes left
[ 1187.856830] blackhole_netdev_xmit(): Dropping skb.
[ 1187.856930] blackhole_netdev_xmit(): Dropping skb.
[ 1187.856995] blackhole_netdev_xmit(): Dropping skb.
[ 1187.857047] blackhole_netdev_xmit(): Dropping skb.