diff --git a/go.mod b/go.mod
index 269d83a..3eaa896 100644
--- a/go.mod
+++ b/go.mod
@@ -2,23 +2,21 @@ module slimming
 
 go 1.19
 
-require github.com/songgao/water v0.0.0-20200317203138-2b4b6d7c09d8
-
 require (
-	github.com/474420502/check v0.0.1 // indirect
-	github.com/klauspost/compress v1.15.9 // indirect
+	github.com/474420502/check v0.0.1
+	github.com/klauspost/compress v1.15.9
+	github.com/songgao/water v0.0.0-20200317203138-2b4b6d7c09d8
 )
 
 require (
-	github.com/474420502/perfectshutdown v0.3.1
-	github.com/474420502/random v0.5.1
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091 // indirect
+	github.com/474420502/perfectshutdown v0.3.2
+	github.com/golang/protobuf v1.5.2
+	github.com/songgao/packets v0.0.0-20160404182456-549a10cd4091
 	golang.org/x/net v0.0.0-20220822230855-b0a4917ee28c // indirect
 	golang.org/x/sys v0.0.0-20220818161305-2296e01440c6 // indirect
 	golang.org/x/text v0.3.7 // indirect
 	google.golang.org/genproto v0.0.0-20220822174746-9e6da59bd2fc // indirect
-	google.golang.org/grpc v1.48.0 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
+	google.golang.org/grpc v1.48.0
+	google.golang.org/protobuf v1.28.1
 	gopkg.in/yaml.v3 v3.0.1
 )
diff --git a/go.sum b/go.sum
index ff734c2..117753c 100644
--- a/go.sum
+++ b/go.sum
@@ -2,10 +2,8 @@ cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/474420502/check v0.0.1 h1:JliRiu5sLCd5Xo3Dh0lZqVT/3M8iHRNm/wkjgM3s/wk=
 github.com/474420502/check v0.0.1/go.mod h1:W4LYCKwmpJsZMfWy24YrlC18bV7tuJVhiWHkXSAq1Bg=
-github.com/474420502/perfectshutdown v0.3.1 h1:HFWr5pfcKOHnEe39B5PFKw2ipHCr3jKDPEvuTFMHqeo=
-github.com/474420502/perfectshutdown v0.3.1/go.mod h1:qonD0eLCz1ncQq8heGQHbPdLlh30lofF2ISzV5ASW8A=
-github.com/474420502/random v0.5.1 h1:AA/r690QEKiVdCsFD9OKbjUmmtmLJQ7Qxd4IMVV1sbc=
-github.com/474420502/random v0.5.1/go.mod h1:Kq5VC8ezVvzp9CUahvebIdlSiFdHzEzscaOScLvbw2c=
+github.com/474420502/perfectshutdown v0.3.2 h1:KKzK9Fu4gYs2eEW2Nr3lTgwN7chP5+Jn6f0Dx38HSiE=
+github.com/474420502/perfectshutdown v0.3.2/go.mod h1:qonD0eLCz1ncQq8heGQHbPdLlh30lofF2ISzV5ASW8A=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
@@ -47,6 +45,7 @@ github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
 github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.6 h1:BKbKCqvP6I+rmFHt06ZmyQtvB8xAkWdhFyr0ZUNZcxQ=
 github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
@@ -103,6 +102,7 @@ golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
@@ -134,6 +134,7 @@ google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQ
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
 google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/netcard.go b/netcard.go
index e1e1da7..9780cb9 100644
--- a/netcard.go
+++ b/netcard.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"log"
 	"net"
+	"os"
 	"os/exec"
 	gen "slimming/proto/gen"
 	"strings"
@@ -38,6 +39,10 @@ func NewNetTunnel() *NetTunnel {
 		ipv4key:  config.CurrentNodeKey,
 	}
 
+	nt.shutdown.OnClose(func() {
+		os.Exit(0)
+	})
+
 	for ipv4, address := range config.IPv4Nodes {
 		nt.clients.Store(ipv4, NewRPCClient(address))
 	}