[  672.707482][ T2980] ip (2980) used greatest stack depth: 23880 bytes left
[  679.240715][ T3039] gre: GRE over IPv4 demultiplexor driver
[  679.335584][ T3039] ip6_gre: GRE over IPv6 tunneling driver
[  679.713683][ T3044] ip (3044) used greatest stack depth: 23760 bytes left