[    1.952717] ip (247) used greatest stack depth: 12376 bytes left
[    2.550867] ip (281) used greatest stack depth: 12360 bytes left
[    2.595544] ip (285) used greatest stack depth: 12344 bytes left
[   16.616921] mpls_gso: MPLS GSO support
[  632.372303] ip (23132) used greatest stack depth: 12328 bytes left
[ 1211.627932] blackhole_netdev_xmit(): Dropping skb.
[ 1211.628014] blackhole_netdev_xmit(): Dropping skb.
[ 1211.628066] blackhole_netdev_xmit(): Dropping skb.
[ 1211.628116] blackhole_netdev_xmit(): Dropping skb.