[ 1596.218130][ T3652] gre: GRE over IPv4 demultiplexer driver
[ 1596.663775][ T3675] ip_gre: GRE over IPv4 tunneling driver
[ 1613.321201][ T4246] ip6_gre: GRE over IPv6 tunneling driver
[ 1619.013584][ T4496] ping (4496) used greatest stack depth: 23344 bytes left
[ 1623.933620][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1626.172626][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1628.029596][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1630.077593][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!