[    1.844920] ip (258) used greatest stack depth: 12832 bytes left
[    1.868181] ip (261) used greatest stack depth: 12280 bytes left
[    2.220063] ip (292) used greatest stack depth: 12248 bytes left
[   13.609604] mpls_gso: MPLS GSO support
[  635.347241] ip (18528) used greatest stack depth: 12184 bytes left
[ 1022.191607] blackhole_netdev_xmit(): Dropping skb.
[ 1022.191661] blackhole_netdev_xmit(): Dropping skb.
[ 1022.191695] blackhole_netdev_xmit(): Dropping skb.
[ 1022.191728] blackhole_netdev_xmit(): Dropping skb.
[ 1162.242374] blackhole_netdev_xmit(): Dropping skb.
[ 1162.242433] blackhole_netdev_xmit(): Dropping skb.
[ 1162.242472] blackhole_netdev_xmit(): Dropping skb.
[ 1162.242506] blackhole_netdev_xmit(): Dropping skb.