[ 4060.268831][T28612] gre: GRE over IPv4 demultiplexer driver
[ 4061.834104][T28635] ip_gre: GRE over IPv4 tunneling driver
[ 4109.107980][T29206] ip6_gre: GRE over IPv6 tunneling driver
[ 4133.169672][T28321] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 4136.796765][T29549] ping (29549) used greatest stack depth: 23440 bytes left
[ 4141.809082][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4146.546094][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4150.577118][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4155.377131][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!