[    2.023147] ip (249) used greatest stack depth: 12328 bytes left
[   16.406483] mpls_gso: MPLS GSO support
[  634.081869] ip (23886) used greatest stack depth: 12288 bytes left
[  638.122813] ip (24208) used greatest stack depth: 12192 bytes left
[  932.453950] blackhole_netdev_xmit(): Dropping skb.
[  932.454012] blackhole_netdev_xmit(): Dropping skb.
[  932.454046] blackhole_netdev_xmit(): Dropping skb.
[  932.454073] blackhole_netdev_xmit(): Dropping skb.