[    3.058669] ip (249) used greatest stack depth: 12480 bytes left
[    3.757163] ip (283) used greatest stack depth: 12384 bytes left
[   16.249011] ip (1220) used greatest stack depth: 12360 bytes left
[   17.634439] mpls_gso: MPLS GSO support
[  765.318210] blackhole_netdev_xmit(): Dropping skb.
[  765.318286] blackhole_netdev_xmit(): Dropping skb.
[  765.318316] blackhole_netdev_xmit(): Dropping skb.
[  765.318355] blackhole_netdev_xmit(): Dropping skb.
[  958.436447] ip (18611) used greatest stack depth: 12256 bytes left