[    2.738529] ip (280) used greatest stack depth: 12360 bytes left
[    6.169452] ip (443) used greatest stack depth: 12344 bytes left
[   10.016328] ip (785) used greatest stack depth: 12192 bytes left
[   16.192580] mpls_gso: MPLS GSO support
[  759.170917] blackhole_netdev_xmit(): Dropping skb.
[  759.171002] blackhole_netdev_xmit(): Dropping skb.
[  759.171067] blackhole_netdev_xmit(): Dropping skb.
[  759.171127] blackhole_netdev_xmit(): Dropping skb.
[  774.591857] blackhole_netdev_xmit(): Dropping skb.
[  774.591924] blackhole_netdev_xmit(): Dropping skb.
[  774.591966] blackhole_netdev_xmit(): Dropping skb.
[  774.592012] blackhole_netdev_xmit(): Dropping skb.