[ 4222.400951][T29347] gre: GRE over IPv4 demultiplexer driver
[ 4224.004438][T29370] ip_gre: GRE over IPv4 tunneling driver
[ 4271.719224][T29941] ip6_gre: GRE over IPv6 tunneling driver
[ 4294.248857][T30191] ping (30191) used greatest stack depth: 23488 bytes left
[ 4307.459317][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4312.259264][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4316.355255][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4321.347240][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!