[    2.019073] ip (268) used greatest stack depth: 12472 bytes left
[    2.101726] ip (277) used greatest stack depth: 12328 bytes left
[    2.180024] ip (286) used greatest stack depth: 12200 bytes left
[    2.255174] ip (295) used greatest stack depth: 12168 bytes left
[   27.189202] ip (2106) used greatest stack depth: 11944 bytes left
[   76.406467] netem: version 1.3
[  634.806886] tc (24870) used greatest stack depth: 11864 bytes left