[    2.222151] ip (251) used greatest stack depth: 12416 bytes left
[    2.903444] ip (285) used greatest stack depth: 12384 bytes left
[   16.207885] mpls_gso: MPLS GSO support
[   25.208615] ip (2438) used greatest stack depth: 12360 bytes left
[   26.640297] ip (2574) used greatest stack depth: 12256 bytes left
[ 1238.452656] blackhole_netdev_xmit(): Dropping skb.
[ 1238.452728] blackhole_netdev_xmit(): Dropping skb.
[ 1238.452758] blackhole_netdev_xmit(): Dropping skb.
[ 1238.452790] blackhole_netdev_xmit(): Dropping skb.