[ 3920.658352][T20018] gre: GRE over IPv4 demultiplexor driver
[ 3922.652759][T20041] ip_gre: GRE over IPv4 tunneling driver
[ 3982.839403][T20614] ip6_gre: GRE over IPv6 tunneling driver
[ 3989.726493][T20675] ping (20675) used greatest stack depth: 23120 bytes left
[ 4008.999464][T20863] ping (20863) used greatest stack depth: 21584 bytes left
[ 4025.073832][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4031.089784][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4036.273731][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4042.545803][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!