[ 4491.931866][T25967] gre: GRE over IPv4 demultiplexor driver
[ 4494.269712][T25997] ip_gre: GRE over IPv4 tunneling driver
[ 4556.699412][T26571] ip6_gre: GRE over IPv6 tunneling driver
[ 4563.988780][T26632] ping (26632) used greatest stack depth: 23232 bytes left
[ 4599.611042][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4605.690958][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4610.810965][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4616.826966][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4640.557651][T27338] ping (27338) used greatest stack depth: 23216 bytes left