[    1.909619] ip (251) used greatest stack depth: 12392 bytes left
[    2.014321] ip (257) used greatest stack depth: 12344 bytes left
[    2.544401] MPTCP: bogus mpc option on established client sk
[   49.539909] netem: version 1.3
[  552.019863] tc (11895) used greatest stack depth: 11872 bytes left