[ 1518.220693][T17965] gre: GRE over IPv4 demultiplexer driver
[ 1518.678675][T17988] ip_gre: GRE over IPv4 tunneling driver
[ 1534.483275][T18559] ip6_gre: GRE over IPv6 tunneling driver
[ 1540.003686][T18808] ping (18808) used greatest stack depth: 23776 bytes left
[ 1544.897289][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1546.882241][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1548.737253][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1550.785251][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!