Multiple Radius clients from the same host IP supported?

Dear FreeRadius Developers, Can multiple radius clients on the same server send request to Freeradius? I ask this question because they may be producing the same UniqueId in the packages. I believe that, if freeradius use check ip+unique id combination to identify packages from specific BRAS, it will cause problem. Othwise, there should not be any issue. Regards, Murat Ozturk