[ 1152.932278][ T8297] gre: GRE over IPv4 demultiplexor driver
[ 1152.969742][ T8297] ip_gre: GRE over IPv4 tunneling driver
[ 1153.018760][ T8296] ip (8296) used greatest stack depth: 23632 bytes left
[ 1153.336599][ T8306] ip (8306) used greatest stack depth: 23584 bytes left