[ 1487.701416][  T818] gre: GRE over IPv4 demultiplexer driver
[ 1488.143605][  T841] ip_gre: GRE over IPv4 tunneling driver
[ 1503.636100][ T1414] ip6_gre: GRE over IPv6 tunneling driver
[ 1509.041920][ T1663] ping (1663) used greatest stack depth: 23344 bytes left
[ 1513.862375][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1515.845348][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1517.701339][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1519.686346][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!