[ 1.972125] ip (295) used greatest stack depth: 12272 bytes left [ 11.087243] mpls_gso: MPLS GSO support [ 1189.323355] blackhole_netdev_xmit(): Dropping skb. [ 1189.323411] blackhole_netdev_xmit(): Dropping skb. [ 1189.323454] blackhole_netdev_xmit(): Dropping skb. [ 1189.323487] blackhole_netdev_xmit(): Dropping skb.