[ 4353.533389][T20283] gre: GRE over IPv4 demultiplexor driver [ 4355.562966][T20307] ip_gre: GRE over IPv4 tunneling driver [ 4415.720031][T20879] ip6_gre: GRE over IPv6 tunneling driver [ 4447.014654][T21172] ping (21172) used greatest stack depth: 22416 bytes left [ 4458.297522][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4464.185438][ C3] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4469.241465][ C2] ip6_tunnel: tep0 xmit: Local address not yet configured! [ 4475.129452][ C1] ip6_tunnel: tep0 xmit: Local address not yet configured!