[ 3169.870161][T20769] gre: GRE over IPv4 demultiplexor driver
[ 3171.089241][T20792] ip_gre: GRE over IPv4 tunneling driver
[ 3206.638559][T21365] ip6_gre: GRE over IPv6 tunneling driver
[ 3221.185121][T21615] ping (21615) used greatest stack depth: 23360 bytes left
[ 3221.590621][  T237] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3223.622007][T21659] ping (21659) used greatest stack depth: 22432 bytes left
[ 3230.678752][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3234.518542][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3237.847528][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3241.558520][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3291.988664][T22750] ping (22750) used greatest stack depth: 22400 bytes left