[    1.960981] ip (246) used greatest stack depth: 12832 bytes left
[    1.995014] ip (249) used greatest stack depth: 12376 bytes left
[    2.602650] ip (280) used greatest stack depth: 12344 bytes left
[    8.525932] ip (657) used greatest stack depth: 12192 bytes left
[   15.922389] mpls_gso: MPLS GSO support
[ 1235.704666] blackhole_netdev_xmit(): Dropping skb.
[ 1235.704751] blackhole_netdev_xmit(): Dropping skb.
[ 1235.704794] blackhole_netdev_xmit(): Dropping skb.
[ 1235.704832] blackhole_netdev_xmit(): Dropping skb.
[ 1249.721837] blackhole_netdev_xmit(): Dropping skb.
[ 1249.721885] blackhole_netdev_xmit(): Dropping skb.
[ 1249.721916] blackhole_netdev_xmit(): Dropping skb.
[ 1249.721944] blackhole_netdev_xmit(): Dropping skb.