[ 2.962447] ip (281) used greatest stack depth: 12272 bytes left [ 18.846846] mpls_gso: MPLS GSO support [ 979.886345] blackhole_netdev_xmit(): Dropping skb. [ 979.886412] blackhole_netdev_xmit(): Dropping skb. [ 979.886447] blackhole_netdev_xmit(): Dropping skb. [ 979.886478] blackhole_netdev_xmit(): Dropping skb. [ 1032.081165] blackhole_netdev_xmit(): Dropping skb. [ 1032.081228] blackhole_netdev_xmit(): Dropping skb. [ 1032.081271] blackhole_netdev_xmit(): Dropping skb. [ 1032.081313] blackhole_netdev_xmit(): Dropping skb. [ 1033.451066] blackhole_netdev_xmit(): Dropping skb. [ 1033.451120] blackhole_netdev_xmit(): Dropping skb. [ 1033.451154] blackhole_netdev_xmit(): Dropping skb. [ 1033.451203] blackhole_netdev_xmit(): Dropping skb. [ 1037.073550] blackhole_netdev_xmit(): Dropping skb. [ 1037.073607] blackhole_netdev_xmit(): Dropping skb. [ 1058.477659] net_ratelimit: 2 callbacks suppressed [ 1058.477669] blackhole_netdev_xmit(): Dropping skb. [ 1058.477776] blackhole_netdev_xmit(): Dropping skb. [ 1058.477815] blackhole_netdev_xmit(): Dropping skb. [ 1058.477859] blackhole_netdev_xmit(): Dropping skb. [ 1074.646632] blackhole_netdev_xmit(): Dropping skb. [ 1074.646693] blackhole_netdev_xmit(): Dropping skb. [ 1074.646727] blackhole_netdev_xmit(): Dropping skb. [ 1074.646760] blackhole_netdev_xmit(): Dropping skb.