Router: Remove the deprecated UseIP option (#5323)

app/router/config.pb.go

@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.35.1
-// 	protoc        v5.28.2
+// 	protoc        v5.29.4
 // source: app/router/config.proto
 
 package router
@@ -84,8 +84,6 @@ type Config_DomainStrategy int32
 const (
 	// Use domain as is.
 	Config_AsIs Config_DomainStrategy = 0
-	// Always resolve IP for domains.
-	Config_UseIp Config_DomainStrategy = 1
 	// Resolve to IP if the domain doesn't match any rules.
 	Config_IpIfNonMatch Config_DomainStrategy = 2
 	// Resolve to IP if any rule requires IP matching.
@@ -96,13 +94,11 @@ const (
 var (
 	Config_DomainStrategy_name = map[int32]string{
 		0: "AsIs",
-		1: "UseIp",
 		2: "IpIfNonMatch",
 		3: "IpOnDemand",
 	}
 	Config_DomainStrategy_value = map[string]int32{
 		"AsIs":         0,
-		"UseIp":        1,
 		"IpIfNonMatch": 2,
 		"IpOnDemand":   3,
 	}
@@ -1171,7 +1167,7 @@ var file_app_router_config_proto_rawDesc = []byte{
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@@ -1185,17 +1181,16 @@ var file_app_router_config_proto_rawDesc = []byte{
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 }
 
 var (

app/router/config.proto

@@ -147,8 +147,8 @@ message Config {
     // Use domain as is.
     AsIs = 0;
 
-    // Always resolve IP for domains.
-    UseIp = 1;
+    // [Deprecated] Always resolve IP for domains.
+    // UseIp = 1;
 
     // Resolve to IP if the domain doesn't match any rules.
     IpIfNonMatch = 2;

infra/conf/router.go

@@ -83,8 +83,6 @@ func (c *RouterConfig) getDomainStrategy() router.Config_DomainStrategy {
 	}
 
 	switch strings.ToLower(ds) {
-	case "alwaysip":
-		return router.Config_UseIp
 	case "ipifnonmatch":
 		return router.Config_IpIfNonMatch
 	case "ipondemand":