[ 1523.502503][T13745] gre: GRE over IPv4 demultiplexer driver
[ 1523.972911][T13768] ip_gre: GRE over IPv4 tunneling driver
[ 1539.189805][T14343] ip6_gre: GRE over IPv6 tunneling driver
[ 1545.353632][T14640] ping (14640) used greatest stack depth: 23248 bytes left
[ 1549.181117][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1551.166085][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1552.957085][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1554.941097][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!