[ 3159.160401][T27781] gre: GRE over IPv4 demultiplexor driver
[ 3160.277163][T27804] ip_gre: GRE over IPv4 tunneling driver
[ 3195.249298][T28376] ip6_gre: GRE over IPv6 tunneling driver
[ 3209.524863][T28626] ping (28626) used greatest stack depth: 22064 bytes left
[ 3212.308023][T20628] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3218.835362][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3222.483343][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3225.748374][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3229.396337][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!