[ 3160.339999][T28919] gre: GRE over IPv4 demultiplexor driver
[ 3161.545728][T28943] ip_gre: GRE over IPv4 tunneling driver
[ 3197.442021][T29514] ip6_gre: GRE over IPv6 tunneling driver
[ 3198.878800][T19738] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3212.297096][T29763] ping (29763) used greatest stack depth: 23568 bytes left
[ 3221.854252][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3225.629298][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3228.957286][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3232.798322][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!