[ 4282.969173][T20325] gre: GRE over IPv4 demultiplexor driver
[ 4285.048970][T20348] ip_gre: GRE over IPv4 tunneling driver
[ 4347.021949][T20922] ip6_gre: GRE over IPv6 tunneling driver
[ 4374.215247][T21171] ping (21171) used greatest stack depth: 21616 bytes left
[ 4389.853903][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4395.741819][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4400.862792][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4407.006788][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!