[    1.354329] ip (217) used greatest stack depth: 12152 bytes left
[    3.965581] ip (899) used greatest stack depth: 11920 bytes left
[    4.518552] ip (1035) used greatest stack depth: 11912 bytes left
[   51.817901] netem: version 1.3
[   59.612653] ip (4467) used greatest stack depth: 11904 bytes left
[  509.235627] tc (20923) used greatest stack depth: 11704 bytes left