[ 3533.326186][T17465] gre: GRE over IPv4 demultiplexor driver
[ 3535.280226][T17489] ip_gre: GRE over IPv4 tunneling driver
[ 3596.186176][T18067] ip6_gre: GRE over IPv6 tunneling driver
[ 3623.526805][T18317] ping (18317) used greatest stack depth: 23632 bytes left
[ 3639.564142][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3645.451054][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3650.443042][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3656.459123][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!