[ 3400.257490][T31427] gre: GRE over IPv4 demultiplexor driver
[ 3401.371224][T31450] ip_gre: GRE over IPv4 tunneling driver
[ 3435.179826][T32023] ip6_gre: GRE over IPv6 tunneling driver
[ 3446.687776][T18869] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3449.102797][T32272] ping (32272) used greatest stack depth: 23568 bytes left
[ 3458.398653][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3462.110651][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3465.311642][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3468.958676][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3552.060251][ T1504] ping (1504) used greatest stack depth: 23376 bytes left