[    2.912924] ip (284) used greatest stack depth: 12384 bytes left
[   17.905165] mpls_gso: MPLS GSO support
[  644.647733] ip (20175) used greatest stack depth: 12360 bytes left
[ 1239.344981] blackhole_netdev_xmit(): Dropping skb.
[ 1239.345055] blackhole_netdev_xmit(): Dropping skb.
[ 1239.345098] blackhole_netdev_xmit(): Dropping skb.
[ 1239.345139] blackhole_netdev_xmit(): Dropping skb.