[    2.407862] ip (278) used greatest stack depth: 12360 bytes left
[    3.869642] ip (393) used greatest stack depth: 12344 bytes left
[   42.190838] ip (1787) used greatest stack depth: 12208 bytes left
[   53.954484] netem: version 1.3
[   94.253128] ip (2636) used greatest stack depth: 12160 bytes left
[  616.979709] tc (12618) used greatest stack depth: 11936 bytes left