[   18.309208][  T299] ip (299) used greatest stack depth: 24384 bytes left
[   21.192858][  T333] ip (333) used greatest stack depth: 23272 bytes left
[  173.321406][ T1397] mpls_gso: MPLS GSO support
[ 1338.584647][T15760] blackhole_netdev_xmit(): Dropping skb.
[ 1338.585033][T15760] blackhole_netdev_xmit(): Dropping skb.
[ 1338.585481][T15760] blackhole_netdev_xmit(): Dropping skb.
[ 1338.585722][T15760] blackhole_netdev_xmit(): Dropping skb.