From 9f4cd646c23a8fd511c21446ed2c4d391a21b341 Mon Sep 17 00:00:00 2001
From: xishang0128 <xishang02@gmail.com>
Date: Sun, 23 Jun 2024 15:33:38 +0800
Subject: [PATCH] fix: `dhcp://` with special notation cannot be parsed

---
 component/process/process_linux.go |  1 -
 config/config.go                   | 14 +++++++++++---
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/component/process/process_linux.go b/component/process/process_linux.go
index 4667104cc2..45c89e5a5a 100644
--- a/component/process/process_linux.go
+++ b/component/process/process_linux.go
@@ -209,7 +209,6 @@ func findPackageName(uid uint32) string {
 	})
 
 	if sharedPackage, loaded := packageManager.SharedPackageByID(uid % 100000); loaded {
-		fmt.Println(loaded)
 		return sharedPackage
 	}
 	if packageName, loaded := packageManager.PackageByID(uid % 100000); loaded {
diff --git a/config/config.go b/config/config.go
index 2166b87d70..5676f7aae4 100644
--- a/config/config.go
+++ b/config/config.go
@@ -1057,6 +1057,16 @@ func parseNameServer(servers []string, respectRules bool, preferH3 bool) ([]dns.
 	var nameservers []dns.NameServer
 
 	for idx, server := range servers {
+		if strings.HasPrefix(server, "dhcp://") {
+			nameservers = append(
+				nameservers,
+				dns.NameServer{
+					Net:  "dhcp",
+					Addr: server[len("dhcp://"):],
+				},
+			)
+			continue
+		}
 		server = parsePureDNSServer(server)
 		u, err := url.Parse(server)
 		if err != nil {
@@ -1099,9 +1109,6 @@ func parseNameServer(servers []string, respectRules bool, preferH3 bool) ([]dns.
 					}
 				}
 			}
-		case "dhcp":
-			addr = u.Host
-			dnsNetType = "dhcp" // UDP from DHCP
 		case "quic":
 			addr, err = hostWithDefaultPort(u.Host, "853")
 			dnsNetType = "quic" // DNS over QUIC
@@ -1174,6 +1181,7 @@ func parsePureDNSServer(server string) string {
 		}
 	}
 }
+
 func parseNameServerPolicy(nsPolicy *orderedmap.OrderedMap[string, any], ruleProviders map[string]providerTypes.RuleProvider, respectRules bool, preferH3 bool) (*orderedmap.OrderedMap[string, []dns.NameServer], error) {
 	policy := orderedmap.New[string, []dns.NameServer]()
 	updatedPolicy := orderedmap.New[string, any]()