[    1.617900] ip (260) used greatest stack depth: 12280 bytes left
[   11.123673] mpls_gso: MPLS GSO support
[ 1221.342735] blackhole_netdev_xmit(): Dropping skb.
[ 1221.342820] blackhole_netdev_xmit(): Dropping skb.
[ 1221.342870] blackhole_netdev_xmit(): Dropping skb.
[ 1221.342921] blackhole_netdev_xmit(): Dropping skb.