[    1.988424] ip (246) used greatest stack depth: 12376 bytes left
[    2.614160] ip (280) used greatest stack depth: 12360 bytes left
[    2.666154] ip (284) used greatest stack depth: 12344 bytes left
[   14.794709] mpls_gso: MPLS GSO support
[  720.920803] blackhole_netdev_xmit(): Dropping skb.
[  720.920874] blackhole_netdev_xmit(): Dropping skb.
[  720.920910] blackhole_netdev_xmit(): Dropping skb.
[  720.920947] blackhole_netdev_xmit(): Dropping skb.
[  954.119235] ip (28590) used greatest stack depth: 12160 bytes left