[ 2285.292496][T16890] gre: GRE over IPv4 demultiplexor driver
[ 2287.142525][T16913] ip_gre: GRE over IPv4 tunneling driver
[ 2319.872427][T17259] ping (17259) used greatest stack depth: 22816 bytes left
[ 2341.819716][T17486] ip6_gre: GRE over IPv6 tunneling driver
[ 2379.241840][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2384.489750][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2388.969716][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 2394.217722][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!