diff --git a/internal/deepprint/deepprint_test.go b/internal/deepprint/deepprint_test.go
index 33847e27f..01ecb43ad 100644
--- a/internal/deepprint/deepprint_test.go
+++ b/internal/deepprint/deepprint_test.go
@@ -36,9 +36,8 @@ func TestDeepPrint(t *testing.T) {
 func getVal() []interface{} {
 	return []interface{}{
 		&wgcfg.Config{
-			Name:       "foo",
-			Addresses:  []netaddr.IPPrefix{{Bits: 5, IP: netaddr.IPFrom16([16]byte{3: 3})}},
-			ListenPort: 5,
+			Name:      "foo",
+			Addresses: []netaddr.IPPrefix{{Bits: 5, IP: netaddr.IPFrom16([16]byte{3: 3})}},
 			Peers: []wgcfg.Peer{
 				{
 					Endpoints: "foo:5",
diff --git a/wgengine/magicsock/magicsock_test.go b/wgengine/magicsock/magicsock_test.go
index 8da97779b..33a571029 100644
--- a/wgengine/magicsock/magicsock_test.go
+++ b/wgengine/magicsock/magicsock_test.go
@@ -460,12 +460,11 @@ func makeConfigs(t *testing.T, addrs []netaddr.IPPort) []wgcfg.Config {
 	}
 
 	var cfgs []wgcfg.Config
-	for i, addr := range addrs {
+	for i := range addrs {
 		cfg := wgcfg.Config{
 			Name:       fmt.Sprintf("peer%d", i+1),
 			PrivateKey: privKeys[i],
 			Addresses:  addresses[i],
-			ListenPort: addr.Port,
 		}
 		for peerNum, addr := range addrs {
 			if peerNum == i {
diff --git a/wgengine/wgcfg/config.go b/wgengine/wgcfg/config.go
index 2928e47d2..08328bcea 100644
--- a/wgengine/wgcfg/config.go
+++ b/wgengine/wgcfg/config.go
@@ -20,7 +20,6 @@ type Config struct {
 	Name       string
 	PrivateKey PrivateKey
 	Addresses  []netaddr.IPPrefix
-	ListenPort uint16
 	MTU        uint16
 	DNS        []netaddr.IP
 	Peers      []Peer
diff --git a/wgengine/wgcfg/nmcfg/nmcfg.go b/wgengine/wgcfg/nmcfg/nmcfg.go
index fb75fb923..d481066fb 100644
--- a/wgengine/wgcfg/nmcfg/nmcfg.go
+++ b/wgengine/wgcfg/nmcfg/nmcfg.go
@@ -57,7 +57,6 @@ func WGCfg(nm *netmap.NetworkMap, logf logger.Logf, flags netmap.WGConfigFlags,
 		Name:       "tailscale",
 		PrivateKey: wgcfg.PrivateKey(nm.PrivateKey),
 		Addresses:  nm.Addresses,
-		ListenPort: nm.LocalPort,
 		Peers:      make([]wgcfg.Peer, 0, len(nm.Peers)),
 	}
 
diff --git a/wgengine/wgcfg/parser.go b/wgengine/wgcfg/parser.go
index bf0b45835..ec66eb6bc 100644
--- a/wgengine/wgcfg/parser.go
+++ b/wgengine/wgcfg/parser.go
@@ -144,11 +144,7 @@ func (cfg *Config) handleDeviceLine(key, value string) error {
 		// wireguard-go guarantees not to send zero value; private keys are already clamped.
 		cfg.PrivateKey = PrivateKey(*k)
 	case "listen_port":
-		port, err := strconv.ParseUint(value, 10, 16)
-		if err != nil {
-			return fmt.Errorf("failed to parse listen_port: %w", err)
-		}
-		cfg.ListenPort = uint16(port)
+		// ignore
 	case "fwmark":
 		// ignore
 	default:
diff --git a/wgengine/wgcfg/writer.go b/wgengine/wgcfg/writer.go
index 079c1eb5e..f64b71bf3 100644
--- a/wgengine/wgcfg/writer.go
+++ b/wgengine/wgcfg/writer.go
@@ -40,9 +40,6 @@ func (cfg *Config) ToUAPI(w io.Writer, prev *Config) error {
 	if prev.PrivateKey != cfg.PrivateKey {
 		set("private_key", cfg.PrivateKey.HexString())
 	}
-	if prev.ListenPort != cfg.ListenPort {
-		setUint16("listen_port", cfg.ListenPort)
-	}
 
 	old := make(map[Key]Peer)
 	for _, p := range prev.Peers {