[ 4700.937903][T25594] gre: GRE over IPv4 demultiplexor driver [ 4703.228586][T25618] ip_gre: GRE over IPv4 tunneling driver [ 4774.462009][T26191] ip6_gre: GRE over IPv6 tunneling driver [ 4814.646060][T26536] ping (26536) used greatest stack depth: 23296 bytes left [ 4821.047947][ C0] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4827.383819][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4832.887829][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4839.480811][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured!