[ 1448.649304][T13751] gre: GRE over IPv4 demultiplexer driver
[ 1449.090419][T13774] ip_gre: GRE over IPv4 tunneling driver
[ 1465.748454][T14345] ip6_gre: GRE over IPv6 tunneling driver
[ 1471.458550][T14594] ping (14594) used greatest stack depth: 23320 bytes left
[ 1476.521382][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1478.761291][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1480.745272][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1483.049285][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!