[ 4380.588571][T29220] gre: GRE over IPv4 demultiplexer driver
[ 4382.253274][T29243] ip_gre: GRE over IPv4 tunneling driver
[ 4431.855379][T29814] ip6_gre: GRE over IPv6 tunneling driver
[ 4448.983679][T30022] ping (30022) used greatest stack depth: 23392 bytes left
[ 4466.135574][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4471.191438][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4475.671461][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4480.663418][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!