[   17.312378][  T297] ip (297) used greatest stack depth: 24360 bytes left
[   18.839427][  T311] ip (311) used greatest stack depth: 23712 bytes left
[  171.975393][ T1396] mpls_gso: MPLS GSO support
[ 1020.764121][T11750] blackhole_netdev_xmit(): Dropping skb.
[ 1020.764557][T11750] blackhole_netdev_xmit(): Dropping skb.
[ 1020.764785][T11750] blackhole_netdev_xmit(): Dropping skb.
[ 1020.765015][T11750] blackhole_netdev_xmit(): Dropping skb.