[    2.156803] ip (263) used greatest stack depth: 12416 bytes left
[    2.832340] ip (294) used greatest stack depth: 12384 bytes left
[   10.365036] ip (832) used greatest stack depth: 12256 bytes left
[   16.622179] mpls_gso: MPLS GSO support
[  829.060321] blackhole_netdev_xmit(): Dropping skb.
[  829.060381] blackhole_netdev_xmit(): Dropping skb.
[  829.060412] blackhole_netdev_xmit(): Dropping skb.
[  829.060444] blackhole_netdev_xmit(): Dropping skb.