[    2.842380] ip (281) used greatest stack depth: 12272 bytes left
[   17.053147] mpls_gso: MPLS GSO support
[  638.995545] ip (16760) used greatest stack depth: 12192 bytes left
[ 1054.301479] blackhole_netdev_xmit(): Dropping skb.
[ 1054.301568] blackhole_netdev_xmit(): Dropping skb.
[ 1054.301619] blackhole_netdev_xmit(): Dropping skb.
[ 1054.301670] blackhole_netdev_xmit(): Dropping skb.