[ 1572.452017][T28405] gre: GRE over IPv4 demultiplexer driver
[ 1572.916446][T28428] ip_gre: GRE over IPv4 tunneling driver
[ 1589.540073][T29000] ip6_gre: GRE over IPv6 tunneling driver
[ 1597.708434][T29344] ping (29344) used greatest stack depth: 23120 bytes left
[ 1600.671680][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1602.783653][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1604.704645][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1606.815658][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!