[    2.060555] ip (251) used greatest stack depth: 12568 bytes left
[    2.653362] ip (282) used greatest stack depth: 12360 bytes left
[    6.516716] ip (445) used greatest stack depth: 12344 bytes left
[   16.811035] mpls_gso: MPLS GSO support
[ 1144.122269] blackhole_netdev_xmit(): Dropping skb.
[ 1144.122352] blackhole_netdev_xmit(): Dropping skb.
[ 1144.122386] blackhole_netdev_xmit(): Dropping skb.
[ 1144.122432] blackhole_netdev_xmit(): Dropping skb.
[ 1205.656669] blackhole_netdev_xmit(): Dropping skb.
[ 1205.656740] blackhole_netdev_xmit(): Dropping skb.
[ 1205.656796] blackhole_netdev_xmit(): Dropping skb.
[ 1205.656853] blackhole_netdev_xmit(): Dropping skb.