[ 4450.552364][T26330] gre: GRE over IPv4 demultiplexor driver
[ 4452.649986][T26353] ip_gre: GRE over IPv4 tunneling driver
[ 4512.813893][T26927] ip6_gre: GRE over IPv6 tunneling driver
[ 4549.027678][T27271] ping (27271) used greatest stack depth: 21584 bytes left
[ 4554.875053][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4560.634946][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4565.626961][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4571.515961][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!