Linkd when performing bridge discovery does not have any control on duplicated ip addresses. So that for this specific reason it will save only the last found entry in atinterface.
This will produce weird links when the last ip address is associated with a mac address belonging to another network.
So if the router that holds the arp table is on network A, then all the nodes holding the duplicated ip address are associate with the mac address on that network. So the port of the switch that has an entry in the bridge forwarding table will result linked to all the "duplicated ip addresses node"