[ 1537.330284][T28409] gre: GRE over IPv4 demultiplexer driver
[ 1537.760733][T28432] ip_gre: GRE over IPv4 tunneling driver
[ 1553.409203][T29011] ip6_gre: GRE over IPv6 tunneling driver
[ 1560.858295][T29354] ping (29354) used greatest stack depth: 23336 bytes left
[ 1563.685258][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1565.669217][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1567.524228][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1569.508236][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!