[    2.135599] ip (255) used greatest stack depth: 12392 bytes left
[    2.390529] ip (272) used greatest stack depth: 12360 bytes left
[    2.662409] ip (290) used greatest stack depth: 12352 bytes left
[    4.761549] ip (439) used greatest stack depth: 12344 bytes left
[   52.959914] netem: version 1.3
[  179.314177] ip (3546) used greatest stack depth: 12040 bytes left