[ 1519.419713][  T443] gre: GRE over IPv4 demultiplexer driver
[ 1519.906257][  T473] ip_gre: GRE over IPv4 tunneling driver
[ 1535.575505][ T1045] ip6_gre: GRE over IPv6 tunneling driver
[ 1543.000582][ T1388] ping (1388) used greatest stack depth: 22912 bytes left
[ 1545.863357][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1547.847312][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1549.703324][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1551.751332][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!