[ 3216.357378][T28931] gre: GRE over IPv4 demultiplexor driver
[ 3217.539334][T28954] ip_gre: GRE over IPv4 tunneling driver
[ 3255.239441][T29531] ip6_gre: GRE over IPv6 tunneling driver
[ 3271.009881][T29782] ping (29782) used greatest stack depth: 23296 bytes left
[ 3280.852665][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3284.628576][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3287.892579][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3291.604586][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3338.859158][T30865] ping (30865) used greatest stack depth: 22736 bytes left