[ 4412.752856][T26239] gre: GRE over IPv4 demultiplexor driver
[ 4414.767106][T26263] ip_gre: GRE over IPv4 tunneling driver
[ 4475.681968][T26835] ip6_gre: GRE over IPv6 tunneling driver
[ 4506.483131][T27130] ping (27130) used greatest stack depth: 22416 bytes left
[ 4517.750681][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4523.511715][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4528.438613][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4534.263611][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4744.221904][T29357] ping (29357) used greatest stack depth: 22048 bytes left