[ 1529.670091][T21197] gre: GRE over IPv4 demultiplexer driver
[ 1530.156763][T21220] ip_gre: GRE over IPv4 tunneling driver
[ 1547.049340][T21795] ip6_gre: GRE over IPv6 tunneling driver
[ 1553.146615][T22045] ping (22045) used greatest stack depth: 22864 bytes left
[ 1558.311131][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1560.424104][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1562.344101][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1564.455107][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!