[ 1.912615] ip (294) used greatest stack depth: 12232 bytes left [ 11.414099] mpls_gso: MPLS GSO support [ 1167.068424] blackhole_netdev_xmit(): Dropping skb. [ 1167.068539] blackhole_netdev_xmit(): Dropping skb. [ 1167.068598] blackhole_netdev_xmit(): Dropping skb. [ 1167.068644] blackhole_netdev_xmit(): Dropping skb.