[  328.334450][ T2860] gre: GRE over IPv4 demultiplexor driver
[  329.908715][ T2883] ip_gre: GRE over IPv4 tunneling driver
[  375.856687][ T3460] ip6_gre: GRE over IPv6 tunneling driver
[  395.487487][ T3709] ping (3709) used greatest stack depth: 23440 bytes left
[  407.617506][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  412.289425][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  416.321454][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[  420.993417][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!