[ 4653.863518][T23286] gre: GRE over IPv4 demultiplexor driver [ 4656.101918][T23309] ip_gre: GRE over IPv4 tunneling driver [ 4721.694318][T23883] ip6_gre: GRE over IPv6 tunneling driver [ 4761.861103][T24227] ping (24227) used greatest stack depth: 21584 bytes left [ 4768.259137][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4774.658086][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4779.906037][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4786.434031][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured!