[ 4430.849548][T25983] gre: GRE over IPv4 demultiplexor driver
[ 4432.915564][T26007] ip_gre: GRE over IPv4 tunneling driver
[ 4493.981284][T26579] ip6_gre: GRE over IPv6 tunneling driver
[ 4520.578465][T26830] ping (26830) used greatest stack depth: 23616 bytes left
[ 4536.115535][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4542.003602][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4546.867451][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4552.692452][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4763.269729][T29094] ping (29094) used greatest stack depth: 22256 bytes left