[ 3881.033472][T18542] gre: GRE over IPv4 demultiplexer driver
[ 3882.653971][T18565] ip_gre: GRE over IPv4 tunneling driver
[ 3931.315104][T19138] ip6_gre: GRE over IPv6 tunneling driver
[ 3964.778886][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3969.705808][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3973.929820][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3978.793845][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4042.435467][T20434] ping (20434) used greatest stack depth: 23664 bytes left
[ 4057.489381][T20622] ping (20622) used greatest stack depth: 23536 bytes left