In OneView, the host value of WA for IIS always shows the IPv6 address. What do we need to do/change so that the IPv4 address is captured by OneView instead of the IPv6 address?
You can check this Microsoft document on how to manually disable IPv6 or its components for machine with web agent.
You need to restart the computer for this registry value to take effect. Once restarted, the IPv4 address should reported to OneView.