[ 3414.974925][T23677] gre: GRE over IPv4 demultiplexer driver
[ 3416.534058][T23700] ip_gre: GRE over IPv4 tunneling driver
[ 3464.628099][T24272] ip6_gre: GRE over IPv6 tunneling driver
[ 3493.467076][T24616] ping (24616) used greatest stack depth: 23552 bytes left
[ 3498.555884][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3503.420833][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3507.771823][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3512.764808][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3583.776856][T25654] ping (25654) used greatest stack depth: 23280 bytes left