[    1.934575] ip (249) used greatest stack depth: 12376 bytes left
[    2.493606] ip (280) used greatest stack depth: 12360 bytes left
[    2.541760] ip (284) used greatest stack depth: 12344 bytes left
[   10.004679] ip (923) used greatest stack depth: 12328 bytes left
[   14.618477] mpls_gso: MPLS GSO support
[  854.273005] blackhole_netdev_xmit(): Dropping skb.
[  854.273073] blackhole_netdev_xmit(): Dropping skb.
[  854.273103] blackhole_netdev_xmit(): Dropping skb.
[  854.273128] blackhole_netdev_xmit(): Dropping skb.
[  954.219934] ip (24874) used greatest stack depth: 12304 bytes left