We are looking to deploy Microsoft DirectAccess and as part of that we are planning to Dual Stack IPv6 on various server subnets to enable end-to-end communication between the remote users and the servers (instead of it being NAT64/DNS64)
We do not however have an IPv6 internet connection.
Whilst I’m confident this will work well for the server/client communication, Will this not cause any issues with the DA clients trying to access the internet through the direct access tunnel? (as the DNS server will likely return a 'true' IPv6 address in the DNS response to the client).
Also, for all the servers configured with IPv6 (including the AD/DNS servers), will they have any sort of performance impact when attempting to reach public internet dual-stacked websites? i.e. as it has a global unicast address will it prefer IPv6 and try to reach it with IPv6 first?