[ 508.457289][ T1912] gre: GRE over IPv4 demultiplexor driver [ 510.620708][ T1935] ip_gre: GRE over IPv4 tunneling driver [ 539.270372][ T2192] ping (2192) used greatest stack depth: 22216 bytes left [ 575.443899][ T2517] ip6_gre: GRE over IPv6 tunneling driver [ 620.849370][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 627.121276][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 632.433277][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 638.769274][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured!