AdguardTeam
send client ip to upstread dns adguard
Prerequisites
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[X] I have checked the Wiki and Discussions and found no answer
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[X] I have searched other issues and found no duplicates
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[X] I want to request a feature or enhancement and not ask a question
The problem
I use an upstream DNS for my clients based on their CIDR ( it's a geo load balancing DNS server ), now I want to be able to cache the client ip and server that has been told to client for 24 hour and as I only see adguard home IP address its impossible to do such, how can I do it ?
actually I want to achieve sticky sessions or something like that via this trick
flow :
Client => adguard home => upstream DNS
Is there any solution for me ?
Proposed solution
if there would be an option to send client ip to upstream dns it would be great or I don't know something like that
Alternatives considered and additional information
replace the adguard with my upstream DNS and develop what ever I need from adguard on that DNS system
The feature has been implemented, and it is called "EDNS Client Subnet", aka ECS.
If your DNS server can properly handle the EDNS extension, then it can retrieve the original client IP from the ECS.
Unfortunately, due to privacy concerns, ECS generally does not pass the exact client IP to the upstream DNS, but rather passes the precision of IPv4 /24 & IPv6 /56.
well I need to see client ip (/32) on upstream side, what can I do ?
The feature has been implemented
Unfortunately ECS is not the feature OP is asking for here. I came here because I have the same issue too, I would like AGH to pass the client IP on to the upstream DNS server, which it isn't doing.
ECS is not meant for that purpose; it's meant for things like CDNs to be able to resolve to locations nearer to the client (hence passing the subnet only, as it's good enough to determine approximate location).
The OP's and my request is actually to pass on the complete IP of the client to the upstream DNS server.
