[ 1554.058874][ T1514] gre: GRE over IPv4 demultiplexer driver
[ 1554.504942][ T1537] ip_gre: GRE over IPv4 tunneling driver
[ 1569.941308][ T2116] ip6_gre: GRE over IPv6 tunneling driver
[ 1577.131059][ T2459] ping (2459) used greatest stack depth: 23392 bytes left
[ 1579.933708][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1581.916681][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1583.773665][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1585.756691][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!