[    2.896979] ip (278) used greatest stack depth: 12344 bytes left
[   57.692378] netem: version 1.3
[   66.832018] ip (2383) used greatest stack depth: 12304 bytes left
[  539.009691] ip (10926) used greatest stack depth: 12272 bytes left
[  603.117474] tc (12617) used greatest stack depth: 11936 bytes left