[ 2979.759968][  T936] gre: GRE over IPv4 demultiplexor driver
[ 2980.748096][  T959] ip_gre: GRE over IPv4 tunneling driver
[ 3011.917567][ T1532] ip6_gre: GRE over IPv6 tunneling driver
[ 3029.441130][ T1876] ping (1876) used greatest stack depth: 22768 bytes left
[ 3033.432465][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3036.888379][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3039.960398][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3043.480409][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!