[    2.986214] ip (281) used greatest stack depth: 12272 bytes left
[   18.610187] mpls_gso: MPLS GSO support
[  641.887325] ip (18561) used greatest stack depth: 12256 bytes left
[  962.268910] ip (23940) used greatest stack depth: 12248 bytes left
[ 1189.138526] blackhole_netdev_xmit(): Dropping skb.
[ 1189.138610] blackhole_netdev_xmit(): Dropping skb.
[ 1189.138673] blackhole_netdev_xmit(): Dropping skb.
[ 1189.138736] blackhole_netdev_xmit(): Dropping skb.