[ 2621.657662][T19285] gre: GRE over IPv4 demultiplexor driver
[ 2623.450577][T19308] ip_gre: GRE over IPv4 tunneling driver
[ 2677.597847][T19887] ip6_gre: GRE over IPv6 tunneling driver
[ 2705.214212][T20180] ping (20180) used greatest stack depth: 22016 bytes left
[ 2715.242496][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2720.554483][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2725.034380][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2730.218378][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!