[ 4383.418936][T22464] gre: GRE over IPv4 demultiplexor driver
[ 4385.512590][T22487] ip_gre: GRE over IPv4 tunneling driver
[ 4445.753595][T23067] ip6_gre: GRE over IPv6 tunneling driver
[ 4472.356471][T23316] ping (23316) used greatest stack depth: 21904 bytes left
[ 4488.316096][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4494.202995][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4499.195009][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 4505.339001][    C3] ip6_tunnel: tep0 xmit: Local address not yet configured!