[ 4308.000061][T20407] gre: GRE over IPv4 demultiplexor driver
[ 4310.160924][T20431] ip_gre: GRE over IPv4 tunneling driver
[ 4372.734714][T21005] ip6_gre: GRE over IPv6 tunneling driver
[ 4399.303478][T21254] ping (21254) used greatest stack depth: 21584 bytes left
[ 4414.902443][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4420.790392][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4425.654366][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4431.543355][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!