[ 3227.385526][T23670] gre: GRE over IPv4 demultiplexer driver
[ 3228.985244][T23693] ip_gre: GRE over IPv4 tunneling driver
[ 3277.666431][T24264] ip6_gre: GRE over IPv6 tunneling driver
[ 3305.700941][T24607] ping (24607) used greatest stack depth: 22928 bytes left
[ 3310.903910][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3315.766789][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3319.926786][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3324.854835][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!