[    2.543409] ip (280) used greatest stack depth: 12344 bytes left
[   15.622818] mpls_gso: MPLS GSO support
[  976.115745] blackhole_netdev_xmit(): Dropping skb.
[  976.115811] blackhole_netdev_xmit(): Dropping skb.
[  976.115842] blackhole_netdev_xmit(): Dropping skb.
[  976.115874] blackhole_netdev_xmit(): Dropping skb.