[    2.734885] ip (279) used greatest stack depth: 12344 bytes left
[   15.111475] mpls_gso: MPLS GSO support
[  664.147982] blackhole_netdev_xmit(): Dropping skb.
[  664.148041] blackhole_netdev_xmit(): Dropping skb.
[  664.148086] blackhole_netdev_xmit(): Dropping skb.
[  664.148120] blackhole_netdev_xmit(): Dropping skb.