diff --git a/conf.go b/conf.go
index 5374813..fb9490b 100644
--- a/conf.go
+++ b/conf.go
@@ -32,16 +32,18 @@ func newPeerEndpoint() (*peer, error) {
 			Resolver: &net.Resolver{
 				PreferGo: true,
 				Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
+					dot := false
 					if opts.DNS != "" {
 						port := "53"
 						if opts.DoT != "" {
 							port = opts.DoT
+							dot = true
 						}
 						address = net.JoinHostPort(opts.DNS, port)
 					}
-					logger.Verbosef("Using %s to resolve peer endpoint", address)
+					logger.Verbosef("Using %s (DoT: %t) to resolve peer endpoint", address, dot)
 
-					if opts.DoT == "" {
+					if !dot {
 						var d net.Dialer
 						return d.DialContext(ctx, network, address)
 					}
diff --git a/go.mod b/go.mod
index ce9ff01..b11c4d6 100644
--- a/go.mod
+++ b/go.mod
@@ -4,15 +4,16 @@ go 1.17
 
 require (
 	github.com/jessevdk/go-flags v1.5.0
-	golang.zx2c4.com/wireguard v0.0.0-20211116201604-de7c702ace45
-	golang.zx2c4.com/wireguard/tun/netstack v0.0.0-20211116201604-de7c702ace45
+	golang.zx2c4.com/go118/netip v0.0.0-20211111135330-a4a02eeacf9d
+	golang.zx2c4.com/wireguard v0.0.0-20220310012736-ae6bc4dd64e1
+	golang.zx2c4.com/wireguard/tun/netstack v0.0.0-20220310012736-ae6bc4dd64e1
 )
 
 require (
 	github.com/google/btree v1.0.1 // indirect
-	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
-	golang.org/x/net v0.0.0-20211101193420-4a448f8816b3 // indirect
-	golang.org/x/sys v0.0.0-20211103235746-7861aae1554b // indirect
+	golang.org/x/crypto v0.0.0-20220307211146-efcb8507fb70 // indirect
+	golang.org/x/net v0.0.0-20220225172249-27dd8689420f // indirect
+	golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5 // indirect
 	golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba // indirect
 	golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 // indirect
 	gvisor.dev/gvisor v0.0.0-20211020211948-f76a604701b6 // indirect
diff --git a/go.sum b/go.sum
index 41afc9a..5ae0122 100644
--- a/go.sum
+++ b/go.sum
@@ -562,8 +562,9 @@ golang.org/x/crypto v0.0.0-20200220183623-bac4c82f6975/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 h1:7I4JAnoQBe7ZtJcBaYHi5UtiO8tQHbUSXxL+pnGRANg=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.0.0-20211108221036-ceb1ce70b4fa/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.0.0-20220307211146-efcb8507fb70 h1:syTAU9FwmvzEoIYMqcPHOcVm4H3U5u90WsvuYgwpETU=
+golang.org/x/crypto v0.0.0-20220307211146-efcb8507fb70/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -641,9 +642,10 @@ golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20201209123823-ac852fbbde11/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20210423184538-5f58ad60dda6/go.mod h1:OJAsFXCWl8Ukc7SiCT/9KSuxbyM7479/AVlXFRxuMCk=
-golang.org/x/net v0.0.0-20211101193420-4a448f8816b3 h1:VrJZAjbekhoRn7n5FBujY31gboH+iB3pdLxn3gE9FjU=
-golang.org/x/net v0.0.0-20211101193420-4a448f8816b3/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20211111083644-e5c967477495/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220225172249-27dd8689420f h1:oA4XRj0qtSt8Yo1Zms0CUlsT3KG69V2UGQWPBxujDmc=
+golang.org/x/net v0.0.0-20220225172249-27dd8689420f/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -730,16 +732,19 @@ golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210220050731-9a76102bfb43/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210305230114-8fe3ee5dd75b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210309040221-94ec62e08169/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210314195730-07df6a141424/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210320140829-1e4c9ba3b0c4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20211103235746-7861aae1554b h1:1VkfZQv42XQlA/jchYumAnv1UPo6RgF9rJFkTgZIxO4=
 golang.org/x/sys v0.0.0-20211103235746-7861aae1554b/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211110154304-99a53858aa08/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5 h1:y/woIyUBFbpQGKS0u1aHF/40WUDnek3fPOyD08H5Vng=
+golang.org/x/sys v0.0.0-20220310020820-b874c991c1a5/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.0.0-20160726164857-2910a502d2bf/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -749,6 +754,7 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -812,13 +818,15 @@ golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.zx2c4.com/go118/netip v0.0.0-20211111135330-a4a02eeacf9d h1:9+v0G0naRhLPOJEeJOL6NuXTtAHHwmkyZlgQJ0XcQ8I=
+golang.zx2c4.com/go118/netip v0.0.0-20211111135330-a4a02eeacf9d/go.mod h1:5yyfuiqVIJ7t+3MqrpTQ+QqRkMWiESiyDvPNvKYCecg=
 golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 h1:Ug9qvr1myri/zFN6xL17LSCBGFDnphBBhzmILHsM5TY=
 golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224/go.mod h1:deeaetjYA+DHMHg+sMSMI58GrEteJUUzzw7en6TJQcI=
-golang.zx2c4.com/wireguard v0.0.0-20210424170727-c9db4b7aaa22/go.mod h1:a057zjmoc00UN7gVkaJt2sXVK523kMJcogDTEvPIasg=
-golang.zx2c4.com/wireguard v0.0.0-20211116201604-de7c702ace45 h1:mEVhdMPTuebD9IUXOUB5Q2sjZpcmzkahHWd6DrGpLHA=
-golang.zx2c4.com/wireguard v0.0.0-20211116201604-de7c702ace45/go.mod h1:evxZIqfCetExY5piKXGAxJYwvXWkps9zTCkWpkoGFxw=
-golang.zx2c4.com/wireguard/tun/netstack v0.0.0-20211116201604-de7c702ace45 h1:td2v30AWwaU5sKKbgqC3vh6jywoKOG76jJuZV/JnGzA=
-golang.zx2c4.com/wireguard/tun/netstack v0.0.0-20211116201604-de7c702ace45/go.mod h1:U6gm2r5g3zEe4OlrGL+W3rptmOo4Sj6mIFSIZHMFo4s=
+golang.zx2c4.com/wireguard v0.0.0-20220202223031-3b95c81cc178/go.mod h1:TjUWrnD5ATh7bFvmm/ALEJZQ4ivKbETb6pmyj1vUoNI=
+golang.zx2c4.com/wireguard v0.0.0-20220310012736-ae6bc4dd64e1 h1:iuQdvJn3LrXxz3Iony1qBGVS7kEy2uHYnnjHsVbzq/s=
+golang.zx2c4.com/wireguard v0.0.0-20220310012736-ae6bc4dd64e1/go.mod h1:TjUWrnD5ATh7bFvmm/ALEJZQ4ivKbETb6pmyj1vUoNI=
+golang.zx2c4.com/wireguard/tun/netstack v0.0.0-20220310012736-ae6bc4dd64e1 h1:7Rwoa4sJmRu2WS/QTimguhoVgFrZG7IzIXHLUE/uXq8=
+golang.zx2c4.com/wireguard/tun/netstack v0.0.0-20220310012736-ae6bc4dd64e1/go.mod h1:G+p+j9eRsMJcBS/84MTIxvTZ8Uqdg6hrurXC4/TsLok=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
 google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
diff --git a/main.go b/main.go
index 827cc95..64a3d10 100644
--- a/main.go
+++ b/main.go
@@ -12,6 +12,7 @@ import (
 	"time"
 
 	"github.com/jessevdk/go-flags"
+	"golang.zx2c4.com/go118/netip"
 	"golang.zx2c4.com/wireguard/device"
 	"golang.zx2c4.com/wireguard/tun/netstack"
 
@@ -34,7 +35,7 @@ type options struct {
 	PrivateKey   string   `long:"private-key" env:"PRIVATE_KEY" description:"WireGuard client private key in base64 format"`
 	ClientIPs    []string `long:"client-ip" env:"CLIENT_IP" env-delim:"," description:"WireGuard client IP address"`
 
-	DNS string `long:"dns" env:"DNS" description:"DNS server for WireGuard network and resolving server address"`
+	DNS string `long:"dns" env:"DNS" description:"DNS IP for WireGuard network and resolving server address"`
 	DoT string `long:"dot" env:"DOT" description:"Port for DNS over TLS, used to resolve WireGuard server address if available"`
 	MTU int    `long:"mtu" env:"MTU" default:"1280" description:"MTU for WireGuard network"`
 
@@ -145,20 +146,25 @@ func proxyListener(tnet *netstack.Net) (net.Listener, error) {
 }
 
 func setupNet() (*device.Device, *netstack.Net, error) {
-	ips := []net.IP{}
+	if len(opts.ClientIPs) == 0 {
+		return nil, nil, fmt.Errorf("client IP is required")
+	}
+	var clientIPs, dnsServers []netip.Addr
 	for _, s := range opts.ClientIPs {
-		if ip := net.ParseIP(s); ip != nil {
-			ips = append(ips, ip)
+		ip, err := netip.ParseAddr(s)
+		if err != nil {
+			return nil, nil, fmt.Errorf("parse client IP: %w", err)
 		}
+		clientIPs = append(clientIPs, ip)
 	}
-	if len(ips) == 0 {
-		return nil, nil, fmt.Errorf("not have a valid client ip: %s", opts.ClientIPs)
-	}
-	dnsServers := []net.IP{}
-	if ip := net.ParseIP(opts.DNS); ip != nil {
+	if opts.DNS != "" {
+		ip, err := netip.ParseAddr(opts.DNS)
+		if err != nil {
+			return nil, nil, fmt.Errorf("parse DNS IP: %w", err)
+		}
 		dnsServers = append(dnsServers, ip)
 	}
-	tun, tnet, err := netstack.CreateNetTUN(ips, dnsServers, opts.MTU)
+	tun, tnet, err := netstack.CreateNetTUN(clientIPs, dnsServers, opts.MTU)
 	if err != nil {
 		return nil, nil, fmt.Errorf("create netstack tun: %w", err)
 	}
diff --git a/stats.go b/stats.go
index 6a86b39..209214a 100644
--- a/stats.go
+++ b/stats.go
@@ -53,7 +53,7 @@ func statsHandler(next http.Handler, dev *device.Device) http.Handler {
 			}
 			resp, _ := json.MarshalIndent(stats, "", "  ")
 			rw.Header().Set("Content-Type", "application/json")
-			rw.Write(append(resp, '\n'))
+			_, _ = rw.Write(append(resp, '\n'))
 		}
 	})
 }