Make a jail visible on different networks

[Juan Sosa]

I have a freebsd server (192.168.1.5) running a NATed jail (192.168.1.10).

I set up mpd4 on this server in order to allow M$ clients access our 
10.5.1.0/24 vpn. Since jails can´t have more than one ip address, is 
there a way to make 192.168.1.10 visible to the 10.5.1.0/24 network 
without changing the jail ip address?

Summarizing, I need to have my jail serving in both LAN and VPN 
networks. Any suggestions?

Thanks in advance,

Juan Sosa