[    2.044719] ip (245) used greatest stack depth: 12376 bytes left
[    2.628638] ip (279) used greatest stack depth: 12360 bytes left
[    2.679409] ip (283) used greatest stack depth: 12344 bytes left
[   15.944797] mpls_gso: MPLS GSO support
[  636.148432] ip (17263) used greatest stack depth: 12280 bytes left
[ 1014.618514] blackhole_netdev_xmit(): Dropping skb.
[ 1014.618577] blackhole_netdev_xmit(): Dropping skb.
[ 1014.618613] blackhole_netdev_xmit(): Dropping skb.
[ 1014.618649] blackhole_netdev_xmit(): Dropping skb.