[ 1579.206458][ T4793] gre: GRE over IPv4 demultiplexor driver
[ 1579.253962][ T4793] ip6_gre: GRE over IPv6 tunneling driver
[ 1579.427707][ T4797] ip (4797) used greatest stack depth: 23456 bytes left
[ 1579.588200][ T4801] ip (4801) used greatest stack depth: 23216 bytes left