[    2.799224] ip (281) used greatest stack depth: 12360 bytes left
[    2.855148] ip (285) used greatest stack depth: 12344 bytes left
[   17.987003] mpls_gso: MPLS GSO support
[  653.914620] ip (23089) used greatest stack depth: 12064 bytes left
[  903.999307] blackhole_netdev_xmit(): Dropping skb.
[  903.999372] blackhole_netdev_xmit(): Dropping skb.
[  903.999408] blackhole_netdev_xmit(): Dropping skb.
[  903.999454] blackhole_netdev_xmit(): Dropping skb.