[    1.905755] ip (291) used greatest stack depth: 12272 bytes left
[   12.211702] mpls_gso: MPLS GSO support
[   16.021946] ip (2202) used greatest stack depth: 12000 bytes left
[  732.803574] blackhole_netdev_xmit(): Dropping skb.
[  732.803665] blackhole_netdev_xmit(): Dropping skb.
[  732.803714] blackhole_netdev_xmit(): Dropping skb.
[  732.803761] blackhole_netdev_xmit(): Dropping skb.