[ 4333.411092][T20077] gre: GRE over IPv4 demultiplexor driver [ 4335.534789][T20101] ip_gre: GRE over IPv4 tunneling driver [ 4398.716188][T20681] ip6_gre: GRE over IPv6 tunneling driver [ 4431.657673][T20974] ping (20974) used greatest stack depth: 22400 bytes left [ 4443.383721][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4449.463602][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4454.583614][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4460.727604][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured!