[  621.392682][ T3027] ip (3027) used greatest stack depth: 23720 bytes left
[  625.298935][ T3086] gre: GRE over IPv4 demultiplexor driver
[  625.346897][ T3086] ip6_gre: GRE over IPv6 tunneling driver
[  625.627468][ T3091] ip (3091) used greatest stack depth: 23456 bytes left