[ 4639.780218][T25674] gre: GRE over IPv4 demultiplexor driver
[ 4642.057705][T25697] ip_gre: GRE over IPv4 tunneling driver
[ 4708.197307][T26269] ip6_gre: GRE over IPv6 tunneling driver
[ 4737.285250][T26522] ping (26522) used greatest stack depth: 23488 bytes left
[ 4754.617504][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4760.888439][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4766.264441][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4772.600454][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!