[    2.138977] ip (258) used greatest stack depth: 12288 bytes left
[    2.788112] ip (292) used greatest stack depth: 12272 bytes left
[   15.944627] mpls_gso: MPLS GSO support
[  643.300406] ip (20100) used greatest stack depth: 12248 bytes left
[  728.254571] blackhole_netdev_xmit(): Dropping skb.
[  728.254646] blackhole_netdev_xmit(): Dropping skb.
[  728.254687] blackhole_netdev_xmit(): Dropping skb.
[  728.254728] blackhole_netdev_xmit(): Dropping skb.
[  944.262553] blackhole_netdev_xmit(): Dropping skb.
[  944.262606] blackhole_netdev_xmit(): Dropping skb.
[  944.262635] blackhole_netdev_xmit(): Dropping skb.
[  944.262674] blackhole_netdev_xmit(): Dropping skb.