[    1.975639] ip (246) used greatest stack depth: 12376 bytes left
[    2.048399] ip (252) used greatest stack depth: 12328 bytes left
[    7.817681] ip (663) used greatest stack depth: 12064 bytes left
[   15.546714] mpls_gso: MPLS GSO support
[ 1183.723431] blackhole_netdev_xmit(): Dropping skb.
[ 1183.723509] blackhole_netdev_xmit(): Dropping skb.
[ 1183.723550] blackhole_netdev_xmit(): Dropping skb.
[ 1183.723591] blackhole_netdev_xmit(): Dropping skb.