[    1.998297] ip (248) used greatest stack depth: 12376 bytes left
[    2.597361] ip (279) used greatest stack depth: 12360 bytes left
[    2.647780] ip (283) used greatest stack depth: 12344 bytes left
[   16.349282] mpls_gso: MPLS GSO support
[ 1184.275232] blackhole_netdev_xmit(): Dropping skb.
[ 1184.275311] blackhole_netdev_xmit(): Dropping skb.
[ 1184.275346] blackhole_netdev_xmit(): Dropping skb.
[ 1184.275381] blackhole_netdev_xmit(): Dropping skb.