diff --git a/core/server/go.mod b/core/server/go.mod
index 138c5de..95f77ed 100644
--- a/core/server/go.mod
+++ b/core/server/go.mod
@@ -4,7 +4,7 @@ go 1.23.6
 
 require (
 	github.com/Mahdi-zarei/speedtest-go v1.7.12
-	github.com/chai2010/protorpc v1.1.4
+	github.com/chai2010/protorpc v0.0.0-00010101000000-000000000000
 	github.com/dustin/go-humanize v1.0.1
 	github.com/gofrs/uuid/v5 v5.3.2
 	github.com/golang/protobuf v1.5.4
@@ -17,7 +17,7 @@ require (
 	google.golang.org/protobuf v1.36.6
 )
 
-replace github.com/sagernet/sing-box => github.com/throneproj/sing-box v1.11.16-0.20250812161550-beacf6c7532e
+replace github.com/sagernet/sing-box => github.com/throneproj/sing-box v1.11.16-0.20250815201833-a0fbebe54a7c
 
 replace github.com/sagernet/wireguard-go => github.com/throneproj/wireguard-go v0.0.1-beta.7.0.20250728063157-408bba78ad26
 
diff --git a/core/server/go.sum b/core/server/go.sum
index 6fd022b..732bb27 100644
--- a/core/server/go.sum
+++ b/core/server/go.sum
@@ -216,8 +216,8 @@ github.com/tc-hib/winres v0.2.1 h1:YDE0FiP0VmtRaDn7+aaChp1KiF4owBiJa5l964l5ujA=
 github.com/tc-hib/winres v0.2.1/go.mod h1:C/JaNhH3KBvhNKVbvdlDWkbMDO9H4fKKDaN7/07SSuk=
 github.com/tevino/abool/v2 v2.1.0 h1:7w+Vf9f/5gmKT4m4qkayb33/92M+Um45F2BkHOR+L/c=
 github.com/tevino/abool/v2 v2.1.0/go.mod h1:+Lmlqk6bHDWHqN1cbxqhwEAwMPXgc8I1SDEamtseuXY=
-github.com/throneproj/sing-box v1.11.16-0.20250812161550-beacf6c7532e h1:NSUObD4xuLtmimxw4PtXRWvmU87zaamtlmD6LR3hu7U=
-github.com/throneproj/sing-box v1.11.16-0.20250812161550-beacf6c7532e/go.mod h1:oP7U6saStt/Yjg+vAwaLKbsBNUikxodhwWk43ldslRk=
+github.com/throneproj/sing-box v1.11.16-0.20250815201833-a0fbebe54a7c h1:DufqcNbwY0zqaZGV/dJcMCZoRo/Rswe+HKkM+DhSfOk=
+github.com/throneproj/sing-box v1.11.16-0.20250815201833-a0fbebe54a7c/go.mod h1:oP7U6saStt/Yjg+vAwaLKbsBNUikxodhwWk43ldslRk=
 github.com/throneproj/wireguard-go v0.0.1-beta.7.0.20250728063157-408bba78ad26 h1:bBzqh7xTshvPjTFz4URNj/xbPA/d0BOwUM2R83FEMGU=
 github.com/throneproj/wireguard-go v0.0.1-beta.7.0.20250728063157-408bba78ad26/go.mod h1:akc2Wh+rX9bFFNnHJGsQ8VIV3eJI1LXJYgx2Y+8lcW8=
 github.com/u-root/uio v0.0.0-20240224005618-d2acac8f3701 h1:pyC9PaHYZFgEKFdlp3G8RaCKgVpHZnecvArXvPXcFkM=
diff --git a/src/configs/ConfigBuilder.cpp b/src/configs/ConfigBuilder.cpp
index 96b66be..65975e4 100644
--- a/src/configs/ConfigBuilder.cpp
+++ b/src/configs/ConfigBuilder.cpp
@@ -427,7 +427,7 @@ namespace Configs {
             if (tunEnabled && usingSystemdResolved)
             {
                 return {
-                    {"type", "dhcp"}
+                    {"type", "underlying"}
                 };
             }
             return {