[ 3929.636018][T20217] gre: GRE over IPv4 demultiplexor driver
[ 3931.683550][T20240] ip_gre: GRE over IPv4 tunneling driver
[ 3993.862276][T20821] ip6_gre: GRE over IPv6 tunneling driver
[ 4001.178542][T20882] ping (20882) used greatest stack depth: 23040 bytes left
[ 4036.995593][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4043.076563][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4048.131563][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4054.148571][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!