[ 1481.240889][ T3947] gre: GRE over IPv4 demultiplexer driver
[ 1481.722867][ T3970] ip_gre: GRE over IPv4 tunneling driver
[ 1486.543721][ T4172] ping (4172) used greatest stack depth: 23280 bytes left
[ 1498.612294][ T4548] ip6_gre: GRE over IPv6 tunneling driver
[ 1504.610423][ T4798] ping (4798) used greatest stack depth: 22592 bytes left
[ 1509.685764][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1511.798721][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1513.718719][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1515.829730][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!