[    2.135460] ip (251) used greatest stack depth: 12328 bytes left
[   17.479168] mpls_gso: MPLS GSO support
[  820.720955] blackhole_netdev_xmit(): Dropping skb.
[  820.721094] blackhole_netdev_xmit(): Dropping skb.
[  820.721137] blackhole_netdev_xmit(): Dropping skb.
[  820.721174] blackhole_netdev_xmit(): Dropping skb.