[feature] [sgl-router] Add a dp-aware routing strategy (#6869)

sgl-router/src/config/validation.rs

@@ -313,6 +313,14 @@ impl ConfigValidator {
             }
         }
 
+        // Service discovery is conflict with dp_aware routing for now
+        // since it's not fully supported yet
+        if has_service_discovery && config.dp_aware {
+            return Err(ConfigError::IncompatibleConfig {
+                reason: "DP-aware routing is not compatible with service discovery".to_string(),
+            });
+        }
+
         Ok(())
     }