https://download.java.net/java/early_access/jdk25/docs/api/java.base/java/net/InterfaceAddress.html#getBroadcast()

mentions that - "Certain network interfaces, such as the loopback interface, do not support broadcasting and will also return null."

is it strict expectation that getBroadcast() will return null on loopback interface OR it's depends on platform network configuration?

My observation :
address is loopback /127.0.0.1 But the broadcast address is not null /127.255.255.255

Is the spec needs to be clarified here?