[ 4761.637497][T24523] gre: GRE over IPv4 demultiplexor driver
[ 4763.858711][T24546] ip_gre: GRE over IPv4 tunneling driver
[ 4830.954070][T25119] ip6_gre: GRE over IPv6 tunneling driver
[ 4860.467896][T25368] ping (25368) used greatest stack depth: 23600 bytes left
[ 4871.538294][T25462] ping (25462) used greatest stack depth: 23328 bytes left
[ 4877.959722][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4884.423626][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4889.863643][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4896.263642][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!