[ 4352.922289][T29146] gre: GRE over IPv4 demultiplexer driver
[ 4354.629876][T29169] ip_gre: GRE over IPv4 tunneling driver
[ 4404.253819][T29742] ip6_gre: GRE over IPv6 tunneling driver
[ 4425.521343][T29991] ping (29991) used greatest stack depth: 23440 bytes left
[ 4439.095491][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4444.087392][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4448.440394][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4453.431412][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!