[ 4440.028699][T26117] gre: GRE over IPv4 demultiplexor driver
[ 4442.082056][T26142] ip_gre: GRE over IPv4 tunneling driver
[ 4504.209086][T26715] ip6_gre: GRE over IPv6 tunneling driver
[ 4531.799902][T26965] ping (26965) used greatest stack depth: 23616 bytes left
[ 4547.590562][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4553.478485][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4558.470490][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4564.486517][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!