IPv4 -> IPv6 : Prefix 4001::/96 ( not exactly IPv4 -> IPv6 , an IPv6 Address of IPv4 Network used over IPv6 Network )
IPv6 -> IPv4 : Static 30.0.0.1
On Router
New-NetNatTransitionConfiguration -PrefixMapping "4001::/96,0.0.0.0/24" ( i still dont know what 0.0.0.0/0 means, but it just work even if it is set as any of ip address ) -State Enabled -OutboundInterface
ethernet0 ( ipv4 network side that has 30.0.0.1) -IPv4AddressPortPool "30.0.0.1,*" -InstanceName NAT64
netsh interface ipv4 add address ethernet0 30.0.0.1