[    2.614444] ip (279) used greatest stack depth: 12360 bytes left
[    2.667733] ip (283) used greatest stack depth: 12344 bytes left
[    8.727990] ip (666) used greatest stack depth: 12272 bytes left
[   16.148337] mpls_gso: MPLS GSO support
[   17.372613] ip (1416) used greatest stack depth: 12192 bytes left
[  688.595646] blackhole_netdev_xmit(): Dropping skb.
[  688.595736] blackhole_netdev_xmit(): Dropping skb.
[  688.595801] blackhole_netdev_xmit(): Dropping skb.
[  688.595863] blackhole_netdev_xmit(): Dropping skb.
[  991.525774] blackhole_netdev_xmit(): Dropping skb.
[  991.525863] blackhole_netdev_xmit(): Dropping skb.
[  991.525914] blackhole_netdev_xmit(): Dropping skb.
[  991.525961] blackhole_netdev_xmit(): Dropping skb.