[ 4300.519728][T29231] gre: GRE over IPv4 demultiplexer driver
[ 4302.111422][T29254] ip_gre: GRE over IPv4 tunneling driver
[ 4351.898155][T29826] ip6_gre: GRE over IPv6 tunneling driver
[ 4368.125994][T30025] ping (30025) used greatest stack depth: 23008 bytes left
[ 4372.584691][   T10] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 4384.616526][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4389.480533][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4393.705561][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4398.568551][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!