[    6.382097] ip (693) used greatest stack depth: 12104 bytes left
[   11.288465] mpls_gso: MPLS GSO support
[  729.601304] blackhole_netdev_xmit(): Dropping skb.
[  729.601425] blackhole_netdev_xmit(): Dropping skb.
[  729.601481] blackhole_netdev_xmit(): Dropping skb.
[  729.601547] blackhole_netdev_xmit(): Dropping skb.