[ 4693.595214][T24652] gre: GRE over IPv4 demultiplexor driver
[ 4695.860441][T24675] ip_gre: GRE over IPv4 tunneling driver
[ 4762.286417][T25248] ip6_gre: GRE over IPv6 tunneling driver
[ 4791.216606][T25497] ping (25497) used greatest stack depth: 23600 bytes left
[ 4802.023081][T25592] ping (25592) used greatest stack depth: 23328 bytes left
[ 4808.368500][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4814.704451][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4820.273424][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4826.672449][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!