[    2.768751] ip (302) used greatest stack depth: 12384 bytes left
[    3.081044] ip (323) used greatest stack depth: 12320 bytes left
[    9.802880] ip (826) used greatest stack depth: 12128 bytes left
[   15.496165] mpls_gso: MPLS GSO support
[  780.583985] blackhole_netdev_xmit(): Dropping skb.
[  780.584064] blackhole_netdev_xmit(): Dropping skb.
[  780.584102] blackhole_netdev_xmit(): Dropping skb.
[  780.584135] blackhole_netdev_xmit(): Dropping skb.
[ 1100.977151] blackhole_netdev_xmit(): Dropping skb.
[ 1100.977217] blackhole_netdev_xmit(): Dropping skb.
[ 1100.977248] blackhole_netdev_xmit(): Dropping skb.
[ 1100.977274] blackhole_netdev_xmit(): Dropping skb.