[   38.365333] ip (295) used greatest stack depth: 12248 bytes left
[   47.894703] mpls_gso: MPLS GSO support
[  659.297774] ip (5648) used greatest stack depth: 12232 bytes left
[  672.058162] ip (7404) used greatest stack depth: 11976 bytes left
[ 1183.008287] blackhole_netdev_xmit(): Dropping skb.
[ 1183.008358] blackhole_netdev_xmit(): Dropping skb.
[ 1183.008423] blackhole_netdev_xmit(): Dropping skb.
[ 1183.008481] blackhole_netdev_xmit(): Dropping skb.