[ 4384.124245][T17901] gre: GRE over IPv4 demultiplexer driver
[ 4385.912209][T17924] ip_gre: GRE over IPv4 tunneling driver
[ 4439.813580][T18496] ip6_gre: GRE over IPv6 tunneling driver
[ 4476.777738][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4482.217662][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4486.825713][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4492.202674][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4569.987547][T19877] ping (19877) used greatest stack depth: 23536 bytes left