diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index a00cdf5..4326e3f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
       - name: Setup Python
         uses: actions/setup-python@v1
       - name: Install yamllint
@@ -18,14 +18,14 @@ jobs:
     name: shellcheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: shellcheck
-        uses: azohra/shell-linter@v0.2.0
+        uses: fkautz/shell-linter@v0.2.0
   build:
     name: build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions/setup-go@v1
         with:
           go-version: 1.13.4
@@ -35,7 +35,7 @@ jobs:
     name: test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions/setup-go@v1
         with:
           go-version: 1.13.4
@@ -53,7 +53,7 @@ jobs:
       GOLANGCI_LINT_CONTAINER: golangci/golangci-lint:v1.23.2
     steps:
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
       - name: Pull golangci-lint docker container
         run: docker pull ${GOLANGCI_LINT_CONTAINER}
       - name: Run golangci-lint
@@ -65,7 +65,7 @@ jobs:
       TAG: test
       ORG: networkservicemesh
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions/setup-go@v1
         with:
           go-version: 1.13.4
@@ -82,7 +82,7 @@ jobs:
     name: exclude fmt.Errorf
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Exclude fmt.Errorf
         run: |
           if grep -r --include=*.go fmt.Errorf . ; then
@@ -94,7 +94,7 @@ jobs:
     name: Restrict dependencies on github.com/networkservicemesh/*
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - name: Restrict dependencies on github.com/networkservicemesh/*
         run: |
           for i in $(grep github.com/networkservicemesh/ go.mod |grep -v '^module' | sed 's;.*\(github.com\/networkservicemesh\/[a-zA-z\/]*\).*;\1;g' | sort -u);do
@@ -108,7 +108,7 @@ jobs:
     name: check go.mod and go.sum
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions/setup-go@v1
         with:
           go-version: 1.13.4
@@ -121,7 +121,7 @@ jobs:
     name: license header check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v2
       - uses: actions/setup-go@v1
         with:
           go-version: 1.13.4
@@ -136,7 +136,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the code
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
       - name: Exclude replace in go.mod
         run: |
           grep ^replace go.mod || exit 0
diff --git a/domain_test.go b/domain_test.go
index 8f70a8a..19c1bd7 100644
--- a/domain_test.go
+++ b/domain_test.go
@@ -67,7 +67,7 @@ func TestDomain_ContainsShouldWorkFast(t *testing.T) {
 	for i := 0; i < 10000; i++ {
 		require.True(t, d.Contains(samples[i]))
 	}
-	require.True(t, time.Since(start) < time.Second/5)
+	require.True(t, time.Since(start) < time.Second/4)
 }
 
 func TestDomainFewEntries(t *testing.T) {
diff --git a/go.sum b/go.sum
index 05b995a..18fdd7a 100644
--- a/go.sum
+++ b/go.sum
@@ -394,6 +394,7 @@ golang.org/x/lint v0.0.0-20200302205851-738671d3881b h1:Wh+f8QHJXR411sJR8/vRBTZ7
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
+golang.org/x/mod v0.2.0 h1:KU7oHjnv3XNWfa5COkzUifxZmxp1TyI7ImMXqFxLwvQ=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20170114055629-f2499483f923/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180611182652-db08ff08e862/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
diff --git a/setup.go b/setup.go
index c912f63..0a073f2 100644
--- a/setup.go
+++ b/setup.go
@@ -249,7 +249,7 @@ func parseProtocol(f *Fanout, c *caddyfile.Dispenser) error {
 		return c.ArgErr()
 	}
 	net := strings.ToLower(c.Val())
-	if net != tcp && net != "udp" && net != tcptlc {
+	if net != tcp && net != udp && net != tcptlc {
 		return errors.New("unknown network protocol")
 	}
 	f.net = net
diff --git a/transport.go b/transport.go
index b00837d..3fb808a 100644
--- a/transport.go
+++ b/transport.go
@@ -53,13 +53,12 @@ func (t *transportImpl) Dial(ctx context.Context, network string) (*dns.Conn, er
 		network = tcptlc
 	}
 	if network == tcptlc {
-		t.dial(ctx, dns.Client{Net: network, Dialer: &net.Dialer{Timeout: maxTimeout}, TLSConfig: t.tlsConfig})
-
+		return t.dial(ctx, &dns.Client{Net: network, Dialer: &net.Dialer{Timeout: maxTimeout}, TLSConfig: t.tlsConfig})
 	}
-	return t.dial(ctx, dns.Client{Net: network, Dialer: &net.Dialer{Timeout: maxTimeout}})
+	return t.dial(ctx, &dns.Client{Net: network, Dialer: &net.Dialer{Timeout: maxTimeout}})
 }
 
-func (t *transportImpl) dial(ctx context.Context, c dns.Client) (*dns.Conn, error) {
+func (t *transportImpl) dial(ctx context.Context, c *dns.Client) (*dns.Conn, error) {
 	var d net.Dialer
 	if c.Dialer == nil {
 		d = net.Dialer{Timeout: maxTimeout}