[ 4372.029829][T29657] gre: GRE over IPv4 demultiplexer driver
[ 4373.722425][T29680] ip_gre: GRE over IPv4 tunneling driver
[ 4423.879705][T30251] ip6_gre: GRE over IPv6 tunneling driver
[ 4445.773176][T30500] ping (30500) used greatest stack depth: 23440 bytes left
[ 4458.776962][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4463.832881][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4468.185847][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4473.176862][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!