[ 4736.407073][T23299] gre: GRE over IPv4 demultiplexor driver
[ 4738.526359][T23322] ip_gre: GRE over IPv4 tunneling driver
[ 4804.195225][T23902] ip6_gre: GRE over IPv6 tunneling driver
[ 4843.990848][T24253] ping (24253) used greatest stack depth: 21552 bytes left
[ 4850.235490][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4856.378386][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4861.498396][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4867.643387][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!