Hello, I have a wrt54GS v2.1 firmware 4.71.1. My work has provided me with a device for home use to VPN/Firewall. The primary use is going to be VPN so I can access office VOIP. I would like to leave my linksys in first and plug new device into DMZ port. I can see I can do some QOS via MAC, but does that extend to the DMZ interface? Is there a better version of firmware out there that would allow me to run QOS on my private segment as well as the DMZ? Work has suggested I either plug their device inline first, which I am not crazy about, or getting a second IP on my cable modem and hooking it up via switch. I am open to any other suggestions for setup if you have any. Thanks, C.