[ 3440.196816][T22770] gre: GRE over IPv4 demultiplexor driver
[ 3441.385392][T22793] ip_gre: GRE over IPv4 tunneling driver
[ 3478.203930][T23365] ip6_gre: GRE over IPv6 tunneling driver
[ 3493.270469][T23614] ping (23614) used greatest stack depth: 23360 bytes left
[ 3503.063503][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3506.967292][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3510.359270][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3514.264305][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!