General Guidelines
The Secure Access VA supports both IPv4 and IPv6 addressing (dual stack). However there are some observations on the Alibaba cloud regarding IP addressing:
- While the Alibaba ECS ENI supports multiple private IP address, please note that the Secure Access VA only supports a single IPv4 or Single IPv4 + IPv6 pair per ENI.
- One private IPv4 and one private IPv6 address can be added to the Secure Access VA.
- The Alibaba Cloud is not supporting public IPv6 address to ECS instances.
- An IPv6 gateway can be set up at the VPC level and establish connectivity to Secure Access global IPv6 resolvers. However, it has been observed during testing that IPv6 packets are not getting a response even after setting up the gateway. This has been observed in the Germany Frankfurt Region.