fix magic-dns feature gate

easytier/src/instance/proxy_cidrs_monitor.rs

@@ -1,7 +1,6 @@
 use std::collections::BTreeSet;
 use std::net::IpAddr;
 use std::sync::{Arc, Weak};
-use std::time::Instant;
 
 use crate::common::global_ctx::{ArcGlobalCtx, GlobalCtxEvent};
 use crate::common::scoped_task::ScopedTask;
@@ -55,11 +54,15 @@ impl ProxyCidrsMonitor {
             proxy_cidrs = routes.into_iter().collect();
         }
 
-        if let Some(dns) = global_ctx.get_dns() {
-            proxy_cidrs.extend(dns.addresses().into_iter().filter_map(|a| match a.ip() {
-                IpAddr::V4(ip) => Some(cidr::Ipv4Cidr::new_host(ip)),
-                _ => None,
-            }))
+        #[cfg(feature = "magic-dns")]
+        {
+            use crate::dns::config::DnsGlobalCtxExt;
+            if let Some(dns) = global_ctx.dns_server() {
+                proxy_cidrs.extend(dns.addresses().into_iter().filter_map(|a| match a.ip() {
+                    IpAddr::V4(ip) => Some(cidr::Ipv4Cidr::new_host(ip)),
+                    _ => None,
+                }))
+            }
         }
 
         // Calculate diff