Unable to bind to the Loadbalancer DNS

I am trying to setup 2 KeyDB instances in multi-master mode with active replica as ‘yes’. And using the AWS ELB (NLB) to route the traffic to both these instances. When I disable the ‘bind’ configuration in the KeyDB instances it works all good. But am trying to restrict the bind to only the DNS of the NLB. But while doing so, it fails with error as “Could not create server TCP listening socket… bind: Cannot assign requested address”.

Request assistance on how to set the bind if we have a LB in front of these instances. In prod environment, we will be having F5 infant of the 2 instances