[ 1681.173844][T18984] gre: GRE over IPv4 demultiplexer driver
[ 1681.667451][T19007] ip_gre: GRE over IPv4 tunneling driver
[ 1697.498708][T19578] ip6_gre: GRE over IPv6 tunneling driver
[ 1703.102122][T19830] ping (19830) used greatest stack depth: 23208 bytes left
[ 1707.968675][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1709.952640][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1711.807649][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1713.791656][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!