Data path with IPv6 not working and wrong group flow configured

1. Create N1 with Subnet1I(IPv4)Subnet2(IPv6)
2. Create Router and add Subnet2(ipv6) to it.
3. Boot VM and check data path. --> PASS
4. Create N2 with Subnet3(IPv4) and Subnet4(IPv6)
5. Associate IPv6 Subnet4(IPV6)to Router and check data path across all VMs.