[    2.874049] ip (280) used greatest stack depth: 12344 bytes left
[   17.543606] mpls_gso: MPLS GSO support
[  742.007742] blackhole_netdev_xmit(): Dropping skb.
[  742.007803] blackhole_netdev_xmit(): Dropping skb.
[  742.007834] blackhole_netdev_xmit(): Dropping skb.
[  742.007867] blackhole_netdev_xmit(): Dropping skb.
[  957.017022] ip (24201) used greatest stack depth: 12192 bytes left