[ 3254.294052][T20439] gre: GRE over IPv4 demultiplexer driver
[ 3255.864424][T20462] ip_gre: GRE over IPv4 tunneling driver
[ 3303.657964][T21034] ip6_gre: GRE over IPv6 tunneling driver
[ 3331.626588][T21377] ping (21377) used greatest stack depth: 23464 bytes left
[ 3336.844334][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3341.836263][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3345.933243][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3350.732258][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!