Is there any ipaddress configured in both RBS and RNC available in dump?

Hi Experts.

In Ericsson Network I found two NodeB (from different RNC) is having same rbsid.
As per vendor limitations rbsid should be unique within RNC, so it is not throwing any error.
However I am facing problem to decide which NodeB is belong to which RNC.
I used match Iub.rbsid from NodeB with IubLink.rbsid from RNC to link between them.
Due to duplicacy I am not able to follow this. any idea how I can do that alternatively (I don’t want to rely on rbs/iub names).

Is there any ipaddress available which configured in both RBS and RNC dump?