[ 1588.767694][T31463] gre: GRE over IPv4 demultiplexer driver
[ 1589.272132][T31486] ip_gre: GRE over IPv4 tunneling driver
[ 1605.352510][T32057] ip6_gre: GRE over IPv6 tunneling driver
[ 1611.009457][T32307] ping (32307) used greatest stack depth: 22816 bytes left
[ 1613.209333][T16525] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1615.944317][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1617.991316][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1619.911328][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1621.960352][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!