[    1.846314] ip (263) used greatest stack depth: 12280 bytes left
[    2.255604] ip (294) used greatest stack depth: 12248 bytes left
[   13.249158] mpls_gso: MPLS GSO support
[  999.347230] blackhole_netdev_xmit(): Dropping skb.
[  999.347289] blackhole_netdev_xmit(): Dropping skb.
[  999.347331] blackhole_netdev_xmit(): Dropping skb.
[  999.347377] blackhole_netdev_xmit(): Dropping skb.