[    1.983150] ip (261) used greatest stack depth: 12416 bytes left
[    2.536528] ip (292) used greatest stack depth: 12384 bytes left
[    2.848959] ip (313) used greatest stack depth: 12320 bytes left
[   15.409943] mpls_gso: MPLS GSO support
[ 1222.867984] blackhole_netdev_xmit(): Dropping skb.
[ 1222.868079] blackhole_netdev_xmit(): Dropping skb.
[ 1222.868121] blackhole_netdev_xmit(): Dropping skb.
[ 1222.868157] blackhole_netdev_xmit(): Dropping skb.