[    1.997289] ip (249) used greatest stack depth: 12288 bytes left
[    2.587073] ip (280) used greatest stack depth: 12272 bytes left
[   14.277159] ip (1211) used greatest stack depth: 12128 bytes left
[   15.737305] mpls_gso: MPLS GSO support
[  687.420316] blackhole_netdev_xmit(): Dropping skb.
[  687.420390] blackhole_netdev_xmit(): Dropping skb.
[  687.420424] blackhole_netdev_xmit(): Dropping skb.
[  687.420456] blackhole_netdev_xmit(): Dropping skb.