I am now on the development of equipment, there are two front-end ports: wan0 and that lan0,

Now I need to after that lan0 data received, sent to wan0; And wan0 received data is sent to that lan0.
Wan0 connect outside network, that lan0 connected PC,

Because of the need to enable some listening on that lan0 application, so can't put that lan0 and wan0 in under a bridge,

Now the situation is:
1. I set up a default route, so that lan0 data can be sent to wan0;
2. Wan0 can also receive a response data, but can't send that lan0,

Could you tell me how to set the ipv6 routing should be???????

Help Daniel are under the guidance of the

thank you