[ 4665.873622][T24816] gre: GRE over IPv4 demultiplexor driver
[ 4668.097104][T24839] ip_gre: GRE over IPv4 tunneling driver
[ 4695.993394][T25093] ping (25093) used greatest stack depth: 23360 bytes left
[ 4730.970012][T25414] ip6_gre: GRE over IPv6 tunneling driver
[ 4769.314394][T25757] ping (25757) used greatest stack depth: 23328 bytes left
[ 4775.543726][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4781.686614][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4786.870628][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4793.014629][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!