[ 3344.215059][T28597] gre: GRE over IPv4 demultiplexor driver
[ 3345.412319][T28620] ip_gre: GRE over IPv4 tunneling driver
[ 3379.954173][T29193] ip6_gre: GRE over IPv6 tunneling driver
[ 3394.307087][T29443] ping (29443) used greatest stack depth: 23296 bytes left
[ 3404.657825][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3408.497763][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3412.017746][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3415.857786][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!