For the private network, if you use the default IPv4 IP address but specify an IPv6 IP other than the default, the specified IPv6 IP address is ignored

When you configure the private network, you have the option to retain the default IPv4 and IPv6 IP addresses or specify a different IP for the IPv4 and IPv6 network. If you choose to use the default IPv4 IP but specify a different IPv6 address, the specified IPv6 IP is ignored and the private network for both IPv4 and IPv6 is configured using the default IP addresses.

However, if you specify an IPv4 address other than the default value, the IPv6 network is configured correctly based on the specified IPv6 IP. (IA-32201)

Workaround:

There is no workaround for this issue.