[    1.907242] ip (252) used greatest stack depth: 12456 bytes left
[    2.382097] ip (282) used greatest stack depth: 12344 bytes left
[   25.225619] ip (1134) used greatest stack depth: 12312 bytes left
[   53.091444] netem: version 1.3
[  569.693657] tc (11939) used greatest stack depth: 11936 bytes left