[    2.278536] ip (266) used greatest stack depth: 12416 bytes left
[    3.034118] ip (300) used greatest stack depth: 12384 bytes left
[   18.202234] mpls_gso: MPLS GSO support
[   26.730610] ip (2317) used greatest stack depth: 12320 bytes left
[  637.575151] ip (20355) used greatest stack depth: 12256 bytes left
[  891.757375] blackhole_netdev_xmit(): Dropping skb.
[  891.757460] blackhole_netdev_xmit(): Dropping skb.
[  891.757503] blackhole_netdev_xmit(): Dropping skb.
[  891.757541] blackhole_netdev_xmit(): Dropping skb.