[ 4736.407073][T23299] gre: GRE over IPv4 demultiplexor driver [ 4738.526359][T23322] ip_gre: GRE over IPv4 tunneling driver [ 4804.195225][T23902] ip6_gre: GRE over IPv6 tunneling driver [ 4843.990848][T24253] ping (24253) used greatest stack depth: 21552 bytes left [ 4850.235490][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4856.378386][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4861.498396][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4867.643387][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured!