[ 1509.007947][  T388] gre: GRE over IPv4 demultiplexer driver
[ 1509.425641][  T411] ip_gre: GRE over IPv4 tunneling driver
[ 1524.805490][  T983] ip6_gre: GRE over IPv6 tunneling driver
[ 1530.162122][ T1236] ping (1236) used greatest stack depth: 23344 bytes left
[ 1530.285427][T30594] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1534.939144][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1536.924143][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1538.715152][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1540.699153][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1591.988329][ T3500] ping (3500) used greatest stack depth: 22480 bytes left