[ 4688.946373][T24727] gre: GRE over IPv4 demultiplexor driver [ 4691.224904][T24750] ip_gre: GRE over IPv4 tunneling driver [ 4756.579750][T25323] ip6_gre: GRE over IPv6 tunneling driver [ 4764.249035][T25384] ping (25384) used greatest stack depth: 23392 bytes left [ 4802.314579][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4808.842498][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4814.154493][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4820.363508][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured!