Paul, is there a reason you want only the 865? There are several others out there that you can also use. Happy to make some recommendations (in my personal capacity) if you let me know what kind of budget you have in mind.
http://www.dlink.com.sg/Products/?idproduct=591 See the bottom of the page in the link. Call then up. StarHub customers if I am not wrong has a discount. See this link for a review ( Just to let you know on the performance compared to other routers). http://reviews.cnet.com/routers/d-link-dir-865l/4505-3319_7-35371521-2.html
I have no preferences, what I need is the WAN IP address of my client. I am a financial software developer and I have setup a psuedo webserver to allow my clients to access and test the software I write for them. The software is highly confidential and I need that WAN address - it is supplied to me by the client- as one of the safety features. My HuaWei router gave me that WAN IP but it failed recently and was replaced by a N5402SP router that only gives me the router IP, not the WAN IP. I can no longer verify my client's ID so they will stop using my services.
Starthub recommended the DIR865L Router but can not supply it. It is apparently only available to new signups via a redemption centre. So I am stuck...
I am aware that my IP address is dynamic and it does not present a problem.
I need the remote IP address for security purposes, so I can positively identify the machine that is acessing my server.