[    1.847248] ip (241) used greatest stack depth: 12384 bytes left
[    2.496796] ip (276) used greatest stack depth: 12352 bytes left
[   24.129027] ip (2380) used greatest stack depth: 12200 bytes left
[ 1057.909892] blackhole_netdev_xmit(): Dropping skb.
[ 1057.909974] blackhole_netdev_xmit(): Dropping skb.
[ 1057.910020] blackhole_netdev_xmit(): Dropping skb.
[ 1057.910063] blackhole_netdev_xmit(): Dropping skb.
[ 1108.409006] blackhole_netdev_xmit(): Dropping skb.
[ 1108.409059] blackhole_netdev_xmit(): Dropping skb.
[ 1108.409090] blackhole_netdev_xmit(): Dropping skb.
[ 1108.409116] blackhole_netdev_xmit(): Dropping skb.
[ 1119.492684] blackhole_netdev_xmit(): Dropping skb.
[ 1119.492744] blackhole_netdev_xmit(): Dropping skb.
[ 1119.492775] blackhole_netdev_xmit(): Dropping skb.
[ 1119.492802] blackhole_netdev_xmit(): Dropping skb.
[ 1162.654364] blackhole_netdev_xmit(): Dropping skb.
[ 1162.654428] blackhole_netdev_xmit(): Dropping skb.
[ 1162.654468] blackhole_netdev_xmit(): Dropping skb.
[ 1162.654496] blackhole_netdev_xmit(): Dropping skb.