[ 1546.340639][T16890] gre: GRE over IPv4 demultiplexer driver
[ 1546.823985][T16913] ip_gre: GRE over IPv4 tunneling driver
[ 1560.679672][T17443] ip (17443) used greatest stack depth: 23376 bytes left
[ 1562.477147][T17485] ip6_gre: GRE over IPv6 tunneling driver
[ 1564.104815][   T10] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 1572.856753][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1574.840756][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1576.697749][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1578.744761][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1601.555951][T18960] ping (18960) used greatest stack depth: 22576 bytes left