[ 4308.788500][T29288] gre: GRE over IPv4 demultiplexer driver
[ 4310.316978][T29311] ip_gre: GRE over IPv4 tunneling driver
[ 4357.027825][T29883] ip6_gre: GRE over IPv6 tunneling driver
[ 4376.984612][T30132] ping (30132) used greatest stack depth: 23488 bytes left
[ 4389.315890][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4394.115787][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4398.147785][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4402.819793][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!