[    2.472071] ip (278) used greatest stack depth: 12248 bytes left
[ 1064.847444] blackhole_netdev_xmit(): Dropping skb.
[ 1064.847514] blackhole_netdev_xmit(): Dropping skb.
[ 1064.847547] blackhole_netdev_xmit(): Dropping skb.
[ 1064.847591] blackhole_netdev_xmit(): Dropping skb.
[ 1121.419607] blackhole_netdev_xmit(): Dropping skb.
[ 1121.419660] blackhole_netdev_xmit(): Dropping skb.
[ 1121.419693] blackhole_netdev_xmit(): Dropping skb.
[ 1121.419720] blackhole_netdev_xmit(): Dropping skb.
[ 1193.734429] blackhole_netdev_xmit(): Dropping skb.
[ 1193.734493] blackhole_netdev_xmit(): Dropping skb.
[ 1193.734541] blackhole_netdev_xmit(): Dropping skb.
[ 1193.734582] blackhole_netdev_xmit(): Dropping skb.