[  672.886350][ T2980] ip (2980) used greatest stack depth: 24160 bytes left
[  679.705002][ T3039] gre: GRE over IPv4 demultiplexor driver
[  679.738398][ T3039] ip_gre: GRE over IPv4 tunneling driver
[  680.131279][ T3045] ip (3045) used greatest stack depth: 23936 bytes left