We insert a v4-via-v6 route on the interface to direct packets to the v4
subnet to the right interface, where it will be rewritten by the BPF
program. We also create a fake neighbour entry so the kernel won't do
neighbour resolution when sending the pre-rewrite packet. The egress BPF
program will use bpf_redirect_neigh() to do proper neighbour resolution for
the actual destination after rewriting the packet.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
This adds an initial version of a NAT64 translator in BPF. It compiles and
loads, but doesn't actually appear to work yet.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
