[    1.991668] ip (256) used greatest stack depth: 12912 bytes left
[    2.026674] ip (259) used greatest stack depth: 12392 bytes left
[    2.454179] ip (287) used greatest stack depth: 12360 bytes left
[    4.035575] ip (393) used greatest stack depth: 12344 bytes left
[   13.209305] ip (997) used greatest stack depth: 12304 bytes left
[   54.952875] netem: version 1.3
[   61.940009] ip (2357) used greatest stack depth: 12208 bytes left
[  394.285414] ip (7082) used greatest stack depth: 12064 bytes left
[  592.638840] tc (12621) used greatest stack depth: 11936 bytes left