[    1.721744] ip (293) used greatest stack depth: 12248 bytes left
[   11.757329] mpls_gso: MPLS GSO support
[  679.625879] blackhole_netdev_xmit(): Dropping skb.
[  679.625937] blackhole_netdev_xmit(): Dropping skb.
[  679.625983] blackhole_netdev_xmit(): Dropping skb.
[  679.626018] blackhole_netdev_xmit(): Dropping skb.