fix(sub): align sing-box export with migration 1.11–1.15

Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.
fix(sub): align sing-box export with migration 1.11–1.15
Drop deprecated DNS rule ip_is_private without match_response (1.14/1.16).
Keep typed DNS servers, TUN without stack, route sniff/hijack-dns actions,
and route-level private direct per official migration/deprecated docs.

backend/internal/converter/singbox.go

@@ -95,10 +95,9 @@ func buildSingboxSubscriptionDoc(outbounds []map[string]interface{}) map[string]
 			defaultSingboxTUNInbound(),
 		},
 		"outbounds": outbounds,
-		// Route: private traffic stays local; DNS is hijacked into the dns module;
-		// everything else uses the proxy selector. Domain names of outbounds are
-		// resolved via local DNS so we do not create a DNS↔proxy dependency loop
-		// (a common cause of "works but extremely laggy" on SFA).
+		// Route uses rule actions (sniff / hijack-dns) instead of legacy inbound fields
+		// (removed in 1.13). ip_is_private on *route* rules is still valid; DNS rules
+		// must not use bare ip_is_private without match_response (deprecated 1.14).
 		"route": map[string]interface{}{
 			"rules": []map[string]interface{}{
 				{"action": "sniff"},
@@ -122,8 +121,10 @@ func buildSingboxSubscriptionDoc(outbounds []map[string]interface{}) map[string]
 	}
 }
 
-// defaultSingboxDNS: resolve outbound server names via local; general queries via
-// DoH through the proxy selector (after the outbound domain is known).
+// defaultSingboxDNS uses the post-1.12 server object format (type/tag/server)
+// and avoids deprecated DNS rule address filters (ip_is_private / ip_cidr without
+// match_response — removed path in 1.16). Private destinations are handled by
+// route rules instead. See https://sing-box.sagernet.org/migration/
 func defaultSingboxDNS() map[string]interface{} {
 	return map[string]interface{}{
 		"servers": []map[string]interface{}{
@@ -139,17 +140,17 @@ func defaultSingboxDNS() map[string]interface{} {
 				"detour": "proxy",
 			},
 		},
-		"rules": []map[string]interface{}{
-			// Prefer local for private reverse lookups / plain local names.
-			{"ip_is_private": true, "action": "route", "server": "local"},
-		},
 		"final":    "remote",
 		"strategy": "prefer_ipv4",
 	}
 }
 
-// defaultSingboxTUNInbound mirrors common SFA templates without stack/auto_redirect
-// (auto_redirect is Linux-oriented and often hurts mobile clients).
+// defaultSingboxTUNInbound follows current Tun schema:
+// - address (not inet4_address / inet6_address, removed in 1.12)
+// - no stack (deprecated 1.15, removed in 1.17 — client uses sing-tun default)
+// - no inbound sniff / domain_strategy (removed in 1.13; use route rule actions)
+// - dns_mode hijack (1.14+) with route hijack-dns rules
+// https://sing-box.sagernet.org/configuration/inbound/tun/
 func defaultSingboxTUNInbound() map[string]interface{} {
 	return map[string]interface{}{
 		"type":           "tun",

backend/internal/converter/singbox_tun_test.go

@@ -41,6 +41,17 @@ func TestBuildSingboxSubscriptionDocIncludesTUN(t *testing.T) {
 	if !ok || dns["final"] != "remote" {
 		t.Fatalf("dns: %#v", parsed["dns"])
 	}
+	// 1.14+: DNS rules must not use legacy address filters without match_response.
+	if rules, ok := dns["rules"].([]interface{}); ok {
+		for _, r := range rules {
+			m, _ := r.(map[string]interface{})
+			if _, has := m["ip_is_private"]; has {
+				if match, _ := m["match_response"].(bool); !match {
+					t.Fatalf("deprecated DNS ip_is_private without match_response: %#v", m)
+				}
+			}
+		}
+	}
 	route, ok := parsed["route"].(map[string]interface{})
 	if !ok {
 		t.Fatalf("missing route")

docs/subscription-formats.md

@@ -11,7 +11,7 @@ Public token URL (path may use `web_path` / custom sub base):
 | *(empty / clash / default)* | Mihomo / Clash Meta YAML |
 | `v2ray` / `base64` | **Always** standard Base64 of newline-separated share links (`vless://`, `vmess://`, `tuic://`, …). Independent of HTML page “encrypt URI list”. |
 | `uri` / `raw` | Same links; may be plaintext when encrypt is off |
-| `singbox` / `sing-box` | sing-box JSON with default **TUN** + **DNS** (remote via proxy) + `route.rules` sniff/hijack-dns + `route.final=proxy` (SFI/SFA mobile-friendly MTU) (SFI/SFM) and node outbounds |
+| `singbox` / `sing-box` | sing-box JSON with default **TUN** (no `stack`, `address` only) + **DNS** (typed servers, no legacy address filters) + `route.rules` sniff/hijack-dns + private→direct + `route.final=proxy` (aligned with sing-box migration 1.11–1.15) (SFI/SFM) and node outbounds |
 
 UA auto-detection may choose Clash vs v2ray-style when `target` is omitted.