[ 1.898971] ip (246) used greatest stack depth: 12376 bytes left [ 2.521974] ip (280) used greatest stack depth: 12344 bytes left [ 15.044130] mpls_gso: MPLS GSO support [ 24.442539] ip (2432) used greatest stack depth: 12240 bytes left [ 1068.941045] blackhole_netdev_xmit(): Dropping skb. [ 1068.941112] blackhole_netdev_xmit(): Dropping skb. [ 1068.941143] blackhole_netdev_xmit(): Dropping skb. [ 1068.941176] blackhole_netdev_xmit(): Dropping skb.