[ 1612.048677][  T780] gre: GRE over IPv4 demultiplexer driver
[ 1612.630228][  T803] ip_gre: GRE over IPv4 tunneling driver
[ 1632.211363][ T1375] ip6_gre: GRE over IPv6 tunneling driver
[ 1637.244366][ T1575] ping (1575) used greatest stack depth: 23744 bytes left
[ 1638.910406][ T1625] ping (1625) used greatest stack depth: 22696 bytes left
[ 1642.091253][  T536] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1645.219666][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1647.331668][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1649.250778][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1651.619679][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!