[    1.834761] ip (259) used greatest stack depth: 12344 bytes left
[    2.260697] MPTCP: bogus mpc option on established client sk
[    4.960528] ip (537) used greatest stack depth: 12072 bytes left
[   48.190116] netem: version 1.3
[  567.855511] tc (11912) used greatest stack depth: 11784 bytes left