[    1.980781] ip (294) used greatest stack depth: 12232 bytes left
[    4.553901] ip (437) used greatest stack depth: 12216 bytes left
[   11.186675] mpls_gso: MPLS GSO support
[ 1096.778089] blackhole_netdev_xmit(): Dropping skb.
[ 1096.778200] blackhole_netdev_xmit(): Dropping skb.
[ 1096.778284] blackhole_netdev_xmit(): Dropping skb.
[ 1096.778337] blackhole_netdev_xmit(): Dropping skb.