[    1.879210] ip (254) used greatest stack depth: 12400 bytes left
[    2.144926] ip (273) used greatest stack depth: 12352 bytes left
[    7.854896] ip (689) used greatest stack depth: 12296 bytes left
[    9.074775] ip (781) used greatest stack depth: 12168 bytes left
[   53.997406] netem: version 1.3
[  603.067944] tc (12609) used greatest stack depth: 11936 bytes left