[ 4345.376988][T29269] gre: GRE over IPv4 demultiplexer driver
[ 4346.945587][T29292] ip_gre: GRE over IPv4 tunneling driver
[ 4394.264710][T29865] ip6_gre: GRE over IPv6 tunneling driver
[ 4414.646593][T30114] ping (30114) used greatest stack depth: 22440 bytes left
[ 4427.297903][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4432.098827][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4436.257845][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4441.058854][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!