diff --git a/examples/basic_tproxy/dns_interceptor/go.mod b/examples/basic_tproxy/dns_interceptor/go.mod
index 9f36e87..a2abfea 100644
--- a/examples/basic_tproxy/dns_interceptor/go.mod
+++ b/examples/basic_tproxy/dns_interceptor/go.mod
@@ -1,17 +1,15 @@
-module fqdn-firewall
+module dns-interceptor
 
 go 1.17
 
 require (
 	github.com/cilium/dns v1.1.4-0.20190417235132-8e25ec9a0ff3
-	github.com/miekg/dns v1.1.45
 	golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985
 	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c
 )
 
 require (
+	github.com/miekg/dns v1.1.45 // indirect
 	golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 // indirect
-	golang.org/x/mod v0.4.2 // indirect
-	golang.org/x/tools v0.1.6-0.20210726203631-07bc1bf47fb2 // indirect
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
+	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
 )
diff --git a/examples/basic_tproxy/dns_interceptor/main.go b/examples/basic_tproxy/dns_interceptor/main.go
index 0c00c40..bf2d321 100644
--- a/examples/basic_tproxy/dns_interceptor/main.go
+++ b/examples/basic_tproxy/dns_interceptor/main.go
@@ -47,8 +47,6 @@ func setupTransparentSocket(network, address string, c syscall.RawConn) error {
 }
 
 type DNSInterceptor struct {
-	udpClient *dns.Client
-	tcpClient *dns.Client
 }
 
 func (di *DNSInterceptor) NewFQDNFirewall() {
@@ -92,12 +90,12 @@ func main() {
 		Control: setupTransparentSocket,
 	}
 
-	tcpListener, err := listenConf.Listen(context.Background(), "tcp4", "10.0.0.1:53")
+	tcpListener, err := listenConf.Listen(context.Background(), "tcp4", ":53")
 	if err != nil {
 		panic(err)
 	}
 
-	udpListener, err := listenConf.ListenPacket(context.Background(), "udp4", "10.0.0.1:53")
+	udpListener, err := listenConf.ListenPacket(context.Background(), "udp4", ":53")
 	if err != nil {
 		panic(err)
 	}
diff --git a/examples/basic_tproxy/dns_interceptor/spec.yaml b/examples/basic_tproxy/dns_interceptor/spec.yaml
index 5c9fc7d..89f097f 100644
--- a/examples/basic_tproxy/dns_interceptor/spec.yaml
+++ b/examples/basic_tproxy/dns_interceptor/spec.yaml
@@ -6,7 +6,7 @@ nodes:
     type: direct
     args: R0#net0
 - name: R0
-  image: fqdn-firewall:latest
+  image: dns-interceptor:latest
   buildfile: Dockerfile.dns-interceptor
   buildcontext: .
   interfaces: