[    2.620642] ip (281) used greatest stack depth: 12360 bytes left
[    6.440677] ip (448) used greatest stack depth: 12344 bytes left
[   16.999396] mpls_gso: MPLS GSO support
[   30.171254] ip (2621) used greatest stack depth: 12192 bytes left
[ 1237.665590] blackhole_netdev_xmit(): Dropping skb.
[ 1237.665668] blackhole_netdev_xmit(): Dropping skb.
[ 1237.665701] blackhole_netdev_xmit(): Dropping skb.
[ 1237.665742] blackhole_netdev_xmit(): Dropping skb.