[ 4320.491979][T29211] gre: GRE over IPv4 demultiplexer driver
[ 4322.135031][T29234] ip_gre: GRE over IPv4 tunneling driver
[ 4370.819027][T29807] ip6_gre: GRE over IPv6 tunneling driver
[ 4391.752397][T30056] ping (30056) used greatest stack depth: 23440 bytes left
[ 4404.500006][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4409.491904][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4413.715924][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4418.643925][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!