[ 1693.612981][T17699] gre: GRE over IPv4 demultiplexer driver
[ 1694.242749][T17723] ip_gre: GRE over IPv4 tunneling driver
[ 1713.147184][T18298] ip6_gre: GRE over IPv6 tunneling driver
[ 1718.542804][T18497] ping (18497) used greatest stack depth: 23664 bytes left
[ 1725.613296][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1727.853298][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1729.966206][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1732.141233][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1757.908807][T19774] ping (19774) used greatest stack depth: 23504 bytes left