[ 1464.254376][T18224] gre: GRE over IPv4 demultiplexer driver
[ 1464.726825][T18248] ip_gre: GRE over IPv4 tunneling driver
[ 1480.892061][T18819] ip6_gre: GRE over IPv6 tunneling driver
[ 1486.573327][T19069] ping (19069) used greatest stack depth: 23824 bytes left
[ 1487.517968][T19113] ping (19113) used greatest stack depth: 23816 bytes left
[ 1491.461435][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1493.509400][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1495.366399][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1497.413424][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1518.606390][T20200] ping (20200) used greatest stack depth: 23712 bytes left