[GitHub] elsloo opened a new issue #3363: Log resolver and client IP addresses when ENDS0 client subnet extensions are enabled

[GitBox <gi...@apache.org>]

elsloo opened a new issue #3363: Log resolver and client IP addresses when ENDS0 client subnet extensions are enabled
URL: https://github.com/apache/trafficcontrol/issues/3363
 
 
   When EDNS0 client subnet extensions are enabled, the subnet supplied by the resolver is not logged. This creates a situation where it's difficult to understand which IP was used for localization of the request, or if the feature is working at all.
   
   Proposed solution is to add the `rhi` field to DNS request log entries and follow similar logic as we do with HTTP log entries. That is, when EDNS0 client subnet extensions are enabled and a subnet is sent from a resolver, the `rhi` field will contain the resolver's IP address, while `chi` will contain the client subnet. When it is disabled (default) or no client subnet is sent, the `chi` field contains the resolver's IP address, as it is implicitly the client, and the `rhi` field will contain only a dash, or `rhi=-`.

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