[ 3668.415555][T28343] gre: GRE over IPv4 demultiplexor driver
[ 3670.675216][T28366] ip_gre: GRE over IPv4 tunneling driver
[ 3733.026754][T28938] ip6_gre: GRE over IPv6 tunneling driver
[ 3760.661848][T29194] ping (29194) used greatest stack depth: 23632 bytes left
[ 3776.719626][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3782.735452][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3787.984441][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3794.127451][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!