[    2.897090] ip (280) used greatest stack depth: 12344 bytes left
[   18.627430] mpls_gso: MPLS GSO support
[   29.657550] ip (2404) used greatest stack depth: 12328 bytes left
[ 1227.097879] blackhole_netdev_xmit(): Dropping skb.
[ 1227.098002] blackhole_netdev_xmit(): Dropping skb.
[ 1227.098042] blackhole_netdev_xmit(): Dropping skb.
[ 1227.098080] blackhole_netdev_xmit(): Dropping skb.