[ 4725.244231][T24823] gre: GRE over IPv4 demultiplexor driver
[ 4728.138886][T24847] ip_gre: GRE over IPv4 tunneling driver
[ 4798.011714][T25421] ip6_gre: GRE over IPv6 tunneling driver
[ 4826.809511][T25670] ping (25670) used greatest stack depth: 23328 bytes left
[ 4843.627610][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4850.027524][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4855.404486][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4861.675519][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!