[ 1479.905568][T18721] gre: GRE over IPv4 demultiplexer driver
[ 1480.376108][T18744] ip_gre: GRE over IPv4 tunneling driver
[ 1496.671891][T19330] ip6_gre: GRE over IPv6 tunneling driver
[ 1502.379220][T19579] ping (19579) used greatest stack depth: 23224 bytes left
[ 1507.428832][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1509.477790][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1511.333801][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1513.381796][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!