[    1.901972] ip (250) used greatest stack depth: 12240 bytes left
[   15.397177] mpls_gso: MPLS GSO support
[  821.393052] blackhole_netdev_xmit(): Dropping skb.
[  821.393180] blackhole_netdev_xmit(): Dropping skb.
[  821.393220] blackhole_netdev_xmit(): Dropping skb.
[  821.393256] blackhole_netdev_xmit(): Dropping skb.