[  977.425333][ T7588] gre: GRE over IPv4 demultiplexor driver
[  979.438297][ T7612] ip_gre: GRE over IPv4 tunneling driver
[  986.570440][ T7676] ping (7676) used greatest stack depth: 24176 bytes left
[ 1039.010272][ T8189] ip6_gre: GRE over IPv6 tunneling driver
[ 1059.952561][ T8388] ping (8388) used greatest stack depth: 24096 bytes left
[ 1065.033467][ T8438] ping (8438) used greatest stack depth: 23632 bytes left
[ 1080.430614][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1086.510512][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1091.502485][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1097.710547][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!