[ 4259.958442][T21298] gre: GRE over IPv4 demultiplexor driver
[ 4261.564506][T21321] ip_gre: GRE over IPv4 tunneling driver
[ 4289.602149][T21669] ping (21669) used greatest stack depth: 24208 bytes left
[ 4309.708310][T21896] ip6_gre: GRE over IPv6 tunneling driver
[ 4334.135225][T18573] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 4343.030079][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4347.894018][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4352.054016][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4356.918028][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4426.326701][T23276] ping (23276) used greatest stack depth: 23744 bytes left
[ 4523.780910][T24407] ping (24407) used greatest stack depth: 23264 bytes left