[    2.235101] ip (257) used greatest stack depth: 12376 bytes left
[    2.920264] ip (288) used greatest stack depth: 12360 bytes left
[    2.977722] ip (292) used greatest stack depth: 12344 bytes left
[    9.105113] ip (686) used greatest stack depth: 12304 bytes left
[   17.942234] mpls_gso: MPLS GSO support
[  743.970367] blackhole_netdev_xmit(): Dropping skb.
[  743.970426] blackhole_netdev_xmit(): Dropping skb.
[  743.970459] blackhole_netdev_xmit(): Dropping skb.
[  743.970490] blackhole_netdev_xmit(): Dropping skb.
[ 1171.142939] blackhole_netdev_xmit(): Dropping skb.
[ 1171.143012] blackhole_netdev_xmit(): Dropping skb.
[ 1171.143047] blackhole_netdev_xmit(): Dropping skb.
[ 1171.143079] blackhole_netdev_xmit(): Dropping skb.