[ 3940.541061][T19964] gre: GRE over IPv4 demultiplexor driver
[ 3942.599128][T19987] ip_gre: GRE over IPv4 tunneling driver
[ 4004.321961][T20560] ip6_gre: GRE over IPv6 tunneling driver
[ 4031.951451][T20809] ping (20809) used greatest stack depth: 23632 bytes left
[ 4041.882684][T20904] ping (20904) used greatest stack depth: 21904 bytes left
[ 4047.916932][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4053.932899][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4059.052844][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4064.876820][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!