[ 3221.659150][T27809] gre: GRE over IPv4 demultiplexor driver
[ 3222.854469][T27832] ip_gre: GRE over IPv4 tunneling driver
[ 3261.048690][T28406] ip6_gre: GRE over IPv6 tunneling driver
[ 3266.016711][T15387] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3277.014578][T28655] ping (28655) used greatest stack depth: 23360 bytes left
[ 3286.753531][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3290.848551][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3294.304527][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3298.016524][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!