[    2.716571] ip (282) used greatest stack depth: 12360 bytes left
[    2.770052] ip (286) used greatest stack depth: 12344 bytes left
[    2.923199] ip (296) used greatest stack depth: 12192 bytes left
[   16.176616] mpls_gso: MPLS GSO support
[  736.689909] blackhole_netdev_xmit(): Dropping skb.
[  736.689978] blackhole_netdev_xmit(): Dropping skb.
[  736.690010] blackhole_netdev_xmit(): Dropping skb.
[  736.690043] blackhole_netdev_xmit(): Dropping skb.
[ 1123.161678] blackhole_netdev_xmit(): Dropping skb.
[ 1123.161757] blackhole_netdev_xmit(): Dropping skb.
[ 1123.161794] blackhole_netdev_xmit(): Dropping skb.
[ 1123.161832] blackhole_netdev_xmit(): Dropping skb.