[    2.767822] ip (282) used greatest stack depth: 12272 bytes left
[   17.963545] mpls_gso: MPLS GSO support
[  656.313970] ip (27127) used greatest stack depth: 12144 bytes left
[  902.047483] blackhole_netdev_xmit(): Dropping skb.
[  902.047541] blackhole_netdev_xmit(): Dropping skb.
[  902.047574] blackhole_netdev_xmit(): Dropping skb.
[  902.047609] blackhole_netdev_xmit(): Dropping skb.