[ 4691.653281][T24553] gre: GRE over IPv4 demultiplexor driver [ 4693.882816][T24576] ip_gre: GRE over IPv4 tunneling driver [ 4723.393639][T24836] ping (24836) used greatest stack depth: 23360 bytes left [ 4760.655259][T25157] ip6_gre: GRE over IPv6 tunneling driver [ 4807.859356][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4814.322294][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4819.698308][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4825.971313][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured!