A web server behind two gateways?

[Grzegorz Junka]

Hello,

I have a jail running a web server in LAN. There are two routers/WANs 
that can connect LAN to the internet. I enabled NAT and port forwarding 
to the web server on both routers.

The problem is that the web server responds to requests only from one 
router at a time depending on the default gateway set on the jail's 
host. If the default gateway is set as router 1 then the web page can be 
opened only through WAN1 and vice versa.

Can I configure either router/host/jail so that the web server sends the 
response back to the IP that sent the request packet rather than to the 
default gateway?

And a bonus question, how can I configure two jails so that each jail 
sends packets to a different gateway (which may or may not be the same 
as the jails' host's default gateway)?

Thanks
Grzegorz