[    2.459210] ip (278) used greatest stack depth: 12360 bytes left
[    2.566372] ip (287) used greatest stack depth: 12344 bytes left
[   19.440155] ip (1079) used greatest stack depth: 12064 bytes left
[   56.196399] netem: version 1.3
[  602.973898] tc (12829) used greatest stack depth: 11936 bytes left