[    2.443897] ip (246) used greatest stack depth: 12592 bytes left
[    2.492882] ip (249) used greatest stack depth: 12352 bytes left
[    2.670312] ip (259) used greatest stack depth: 12320 bytes left
[    2.738084] ipip: IPv4 and MPLS over IPv4 tunneling driver
[    2.920588] ip (275) used greatest stack depth: 12272 bytes left