[ 3351.630366][T28695] gre: GRE over IPv4 demultiplexor driver
[ 3352.817062][T28719] ip_gre: GRE over IPv4 tunneling driver
[ 3387.855686][T29292] ip6_gre: GRE over IPv6 tunneling driver
[ 3389.184552][T19916] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3394.433434][T19918] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3402.886442][T29541] ping (29541) used greatest stack depth: 23552 bytes left
[ 3408.514268][T29635] ping (29635) used greatest stack depth: 23296 bytes left
[ 3412.928450][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3416.960381][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3420.608453][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3425.216404][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!