[ 4417.642605][T29202] gre: GRE over IPv4 demultiplexer driver
[ 4419.277647][T29225] ip_gre: GRE over IPv4 tunneling driver
[ 4468.021909][T29798] ip6_gre: GRE over IPv6 tunneling driver
[ 4496.239438][T30143] ping (30143) used greatest stack depth: 23440 bytes left
[ 4501.345058][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4506.272958][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4510.432966][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4515.296965][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!