[ 3179.260415][T27812] gre: GRE over IPv4 demultiplexor driver
[ 3180.450712][T27835] ip_gre: GRE over IPv4 tunneling driver
[ 3216.757174][T28406] ip6_gre: GRE over IPv6 tunneling driver
[ 3231.472684][T28657] ping (28657) used greatest stack depth: 23296 bytes left
[ 3237.217580][ T6159] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3241.057458][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3244.834422][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3248.033418][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3251.810422][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!