[ 3325.140047][T23678] gre: GRE over IPv4 demultiplexer driver
[ 3326.991127][T23708] ip_gre: GRE over IPv4 tunneling driver
[ 3376.406405][T24287] ip6_gre: GRE over IPv6 tunneling driver
[ 3393.946906][T24487] ping (24487) used greatest stack depth: 23200 bytes left
[ 3402.548252][ T2518] ip6_tunnel: tep1 xmit: Local address not yet configured!
[ 3411.634354][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3416.690295][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3421.042257][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 3426.098259][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!