[ 4414.302719][T28717] gre: GRE over IPv4 demultiplexer driver
[ 4415.974609][T28740] ip_gre: GRE over IPv4 tunneling driver
[ 4437.524951][T28992] ping (28992) used greatest stack depth: 22728 bytes left
[ 4466.012664][T29312] ip6_gre: GRE over IPv6 tunneling driver
[ 4500.327084][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4505.318980][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4509.606989][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4514.726960][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!