[    2.246404] ip (250) used greatest stack depth: 12392 bytes left
[    2.662993] ip (280) used greatest stack depth: 12360 bytes left
[    7.456377] ip (658) used greatest stack depth: 12344 bytes left
[   11.051262] ip (939) used greatest stack depth: 12296 bytes left
[   52.806824] netem: version 1.3
[   69.312212] ip (2351) used greatest stack depth: 12200 bytes left