[    1.995310] ip (294) used greatest stack depth: 12248 bytes left
[   11.881446] mpls_gso: MPLS GSO support
[  703.565010] blackhole_netdev_xmit(): Dropping skb.
[  703.565075] blackhole_netdev_xmit(): Dropping skb.
[  703.565140] blackhole_netdev_xmit(): Dropping skb.
[  703.565185] blackhole_netdev_xmit(): Dropping skb.