[    2.431192] ip (251) used greatest stack depth: 12376 bytes left
[    3.009826] ip (282) used greatest stack depth: 12344 bytes left
[    5.487032] ip (417) used greatest stack depth: 12328 bytes left
[    8.114846] ip (653) used greatest stack depth: 12304 bytes left
[   15.775846] mpls_gso: MPLS GSO support
[  995.928603] blackhole_netdev_xmit(): Dropping skb.
[  995.928678] blackhole_netdev_xmit(): Dropping skb.
[  995.928712] blackhole_netdev_xmit(): Dropping skb.
[  995.928744] blackhole_netdev_xmit(): Dropping skb.
[ 1037.953212] blackhole_netdev_xmit(): Dropping skb.
[ 1037.953285] blackhole_netdev_xmit(): Dropping skb.
[ 1037.953324] blackhole_netdev_xmit(): Dropping skb.
[ 1037.953366] blackhole_netdev_xmit(): Dropping skb.
[ 1118.968385] blackhole_netdev_xmit(): Dropping skb.
[ 1118.968467] blackhole_netdev_xmit(): Dropping skb.
[ 1118.968506] blackhole_netdev_xmit(): Dropping skb.
[ 1118.968552] blackhole_netdev_xmit(): Dropping skb.