[ 1474.351599][  T978] gre: GRE over IPv4 demultiplexer driver
[ 1474.802998][ T1001] ip_gre: GRE over IPv4 tunneling driver
[ 1490.255514][ T1573] ip6_gre: GRE over IPv6 tunneling driver
[ 1492.770386][T26814] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1493.874366][T26814] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1497.646673][ T1923] ping (1923) used greatest stack depth: 23344 bytes left
[ 1500.531307][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1502.514312][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1504.306320][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1506.290312][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!