[ 1684.620609][T17803] gre: GRE over IPv4 demultiplexer driver
[ 1685.086345][T17826] ip_gre: GRE over IPv4 tunneling driver
[ 1692.667674][T18173] ping (18173) used greatest stack depth: 23552 bytes left
[ 1701.085400][T18398] ip6_gre: GRE over IPv6 tunneling driver
[ 1708.611497][T18742] ping (18742) used greatest stack depth: 23200 bytes left
[ 1711.482661][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1713.531619][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1715.386622][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1717.370626][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!