[ 1515.810328][T11885] gre: GRE over IPv4 demultiplexer driver
[ 1516.228107][T11908] ip_gre: GRE over IPv4 tunneling driver
[ 1531.398747][T12480] ip6_gre: GRE over IPv6 tunneling driver
[ 1538.536526][T12823] ping (12823) used greatest stack depth: 23344 bytes left
[ 1541.358548][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1543.278506][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1545.069521][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1547.053532][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!