is_dynamic_port in DMV sys.tcp_endpoints

I used the following query to check whether SQL server ports are static.SELECT name, protocol_desc, type_desc, state_desc, is_admin_endpoint, port, is_dynamic_port, ip_address FROM sys.tcp_endpointsWhat I found out that, is_dynamic_port column always returns 1. Whether on a server with only one default instance, or another server with only one named instance, which I specifically configured a static port and confirmed using NetStat, this column returns 1. Anyone else ran into this issue?