[ 4640.299814][T25385] gre: GRE over IPv4 demultiplexor driver [ 4642.469831][T25409] ip_gre: GRE over IPv4 tunneling driver [ 4709.653699][T25983] ip6_gre: GRE over IPv6 tunneling driver [ 4739.028641][T26232] ping (26232) used greatest stack depth: 23248 bytes left [ 4756.211461][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4762.739358][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4768.243385][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4774.707375][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured!