Custom DNS

[DUOLabs333]

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Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
A custom option that forces all DNS queries to go through a specified server.

Describe alternatives you've considered

Additional context

[abhinavsingh]

@DUOLabs333 Does this help #671

Can you give CustomDnsResolverPlugin a try. Add your custom code as necessary. Let me know if you run into any issues.

Thank you for bringing this to our attention :)

[abhinavsingh]

Note that, proxy.py won't allow you to directly set a DNS resolver. Instead, plugins must perform DNS resolution within resolve_dns callback and return the expected response.