diff --git a/docs/features/compute-controller-setup.md b/docs/features/compute-controller-setup.md
index d5049fb00..75f4a66c8 100644
--- a/docs/features/compute-controller-setup.md
+++ b/docs/features/compute-controller-setup.md
@@ -112,22 +112,3 @@ Cannot get an IP address on same subnet: No common subnet for compute X (control
 4. Verify both machines are on the same network and can ping each other
 5. Check firewall rules allow TCP/UDP communication on required ports
 
-### Controller Hostname Unreachable
-
-If the controller machine uses a hostname defined in `/etc/hosts` (e.g., `guobin.localhost`), and the compute node reports:
-
-```
-Cannot get an IP address on same subnet: No common subnet for compute X (controller) and Y
-```
-
-1. **Symptom**: The controller's hostname resolves to an IP that is unreachable from the compute node
-2. **Root Cause**: The `/etc/hosts` entry for the controller's hostname points to a stale or unreachable IP address
-3. **Solution**:
-   - Ensure the controller's hostname in `/etc/hosts` resolves to the correct, reachable IP address
-   - Example (correct):
-     ```
-     192.168.1.104  guobin.localhost
-     ```
-   - If the machine's IP is dynamic (DHCP), consider:
-     - Setting a DHCP static lease on the router for a fixed IP
-     - Using mDNS (`.local` domain) if supported by the compute node