[ 4666.233629][T24793] gre: GRE over IPv4 demultiplexor driver
[ 4668.347027][T24816] ip_gre: GRE over IPv4 tunneling driver
[ 4734.145789][T25390] ip6_gre: GRE over IPv6 tunneling driver
[ 4773.496878][T25740] ping (25740) used greatest stack depth: 23328 bytes left
[ 4779.838384][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4786.109310][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4791.613323][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4798.141299][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!