br1 (192.168.1.250, DHCP disabled)
vlan3 (port 4, br1)
static route (DST: 192.168.1.0, MASK: 255.255.255.0, GW: 192.168.1.250)

WAN1                 WAN2
    |                    |
    |                    |
DMZ Router           LAN Router
192.168.1.1          192.168.0.1
    |                    |
    |                    |
   NAS                  PC
192.168.1.2          192.168.0.2