[ 1.927484] ip (294) used greatest stack depth: 12272 bytes left [ 10.949030] mpls_gso: MPLS GSO support [ 635.201989] ip (8624) used greatest stack depth: 12072 bytes left [ 745.448376] blackhole_netdev_xmit(): Dropping skb. [ 745.448506] blackhole_netdev_xmit(): Dropping skb. [ 745.448557] blackhole_netdev_xmit(): Dropping skb. [ 745.448612] blackhole_netdev_xmit(): Dropping skb. [ 955.694649] blackhole_netdev_xmit(): Dropping skb. [ 955.694710] blackhole_netdev_xmit(): Dropping skb. [ 955.694746] blackhole_netdev_xmit(): Dropping skb. [ 955.694778] blackhole_netdev_xmit(): Dropping skb.