### Check for existing issues

- [x] I have searched the existing issues and checked that my issue is not a duplicate.

### What happened?

### Bug report

I am using LiteLLM Proxy version `1.93.0` to discover a remote LangGraph A2A agent.

The agent hostname resolves to an address in the `100.64.0.0/10` range, so it must be added to `user_url_allowed_hosts`.

According to the documentation, I configured it under `litellm_settings`:

```yaml litellm_settings: user_url_allowed_hosts: - hybrid-ai-examples-langgraph-a2a-10........com ```

However, Agent Card discovery still fails.

The runtime error explicitly says:

```If this is a legitimate internal service, add the host to `user_url_allowed_hosts` in general_settings. ```

When I move the same setting to general_settings, it works:

```yaml general_settings: user_url_allowed_hosts: - hybrid-ai-examples-langgraph-a2a-10........com ```

I did not explicitly configure user_url_validation.

## Version

```text LiteLLM Proxy 1.93.0 ```

error: ```text { "detail": "Could not fetch agent card from https://hybrid-ai-examples-langgraph-a2a-10......com/.well-known/agent-card.json (mode=langgraph_platform). Last error: http…