[    1.920378] ip (250) used greatest stack depth: 12376 bytes left
[    2.454577] ip (281) used greatest stack depth: 12360 bytes left
[    2.497781] ip (285) used greatest stack depth: 12344 bytes left
[   15.769240] mpls_gso: MPLS GSO support
[  856.901798] blackhole_netdev_xmit(): Dropping skb.
[  856.901861] blackhole_netdev_xmit(): Dropping skb.
[  856.901892] blackhole_netdev_xmit(): Dropping skb.
[  856.901920] blackhole_netdev_xmit(): Dropping skb.
[ 1100.701020] blackhole_netdev_xmit(): Dropping skb.
[ 1100.701089] blackhole_netdev_xmit(): Dropping skb.
[ 1100.701119] blackhole_netdev_xmit(): Dropping skb.
[ 1100.701146] blackhole_netdev_xmit(): Dropping skb.