[ 2632.186694][T21099] gre: GRE over IPv4 demultiplexer driver
[ 2633.756949][T21122] ip_gre: GRE over IPv4 tunneling driver
[ 2680.505125][T21702] ip6_gre: GRE over IPv6 tunneling driver
[ 2707.887443][T22059] ping (22059) used greatest stack depth: 23464 bytes left
[ 2712.890287][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2717.625213][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2721.721368][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2726.650238][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!