chore(mullvad): remove openvpn support

Author: qdm12

README.md

@@ -58,7 +58,7 @@ Lightweight swiss-army-knife-like VPN client to multiple VPN service providers
 ## Features
 
 - Based on Alpine 3.22 for a small Docker image of 41.1MB
-- Supports: **AirVPN**, **Cyberghost**, **ExpressVPN**, **FastestVPN**, **Giganews**, **HideMyAss**, **IPVanish**, **IVPN**, **Mullvad**, **NordVPN**, **Perfect Privacy**, **Privado**, **Private Internet Access**, **PrivateVPN**, **ProtonVPN**, **PureVPN**,  **SlickVPN**, **Surfshark**, **TorGuard**, **VPNSecure.me**, **VPNUnlimited**, **Vyprvpn**, **Windscribe** servers
+- Supports: **AirVPN**, **Cyberghost**, **ExpressVPN**, **FastestVPN**, **Giganews**, **HideMyAss**, **IPVanish**, **IVPN**, **Mullvad** (Wireguard only), **NordVPN**, **Perfect Privacy**, **Privado**, **Private Internet Access**, **PrivateVPN**, **ProtonVPN**, **PureVPN**,  **SlickVPN**, **Surfshark**, **TorGuard**, **VPNSecure.me**, **VPNUnlimited**, **Vyprvpn**, **Windscribe** servers
 - Supports OpenVPN for all providers listed
 - Supports Wireguard both kernelspace and userspace
   - For **AirVPN**, **FastestVPN**, **Ivpn**, **Mullvad**, **NordVPN**, **Perfect privacy**, **ProtonVPN**, **Surfshark** and **Windscribe**

internal/configuration/settings/provider.go

@@ -2,6 +2,8 @@ package settings
 
 import (
 	"fmt"
+	"slices"
+	"sort"
 	"strings"
 
 	"github.com/qdm12/gluetun/internal/constants/providers"
@@ -31,6 +33,11 @@ func (p *Provider) validate(vpnType string, filterChoicesGetter FilterChoicesGet
 	if vpnType == vpn.OpenVPN {
 		validNames = providers.AllWithCustom()
 		validNames = append(validNames, "pia") // Retro-compatibility
+		// Remove Mullvad since it no longer supports OpenVPN as of January 15th, 2026
+		mullvadIndex := slices.Index(validNames, providers.Mullvad)
+		validNames[mullvadIndex], validNames[len(validNames)-1] = validNames[len(validNames)-1], validNames[mullvadIndex]
+		validNames = validNames[:len(validNames)-1]
+		sort.Strings(validNames)
 	} else { // Wireguard
 		validNames = []string{
 			providers.Airvpn,
@@ -48,10 +55,6 @@ func (p *Provider) validate(vpnType string, filterChoicesGetter FilterChoicesGet
 		return fmt.Errorf("%w for Wireguard: %w", ErrVPNProviderNameNotValid, err)
 	}
 
-	if p.Name == providers.Mullvad && vpnType == vpn.OpenVPN {
-		warner.Warn("https://mullvad.net/en/blog/removing-openvpn-15th-january-2026")
-	}
-
 	err = p.ServerSelection.validate(p.Name, filterChoicesGetter, warner)
 	if err != nil {
 		return fmt.Errorf("server selection: %w", err)

internal/provider/mullvad/connection.go

@@ -9,7 +9,7 @@ import (
 func (p *Provider) GetConnection(selection settings.ServerSelection, ipv6Supported bool) (
 	connection models.Connection, err error,
 ) {
-	defaults := utils.NewConnectionDefaults(443, 1194, 51820) //nolint:mnd
+	defaults := utils.NewConnectionDefaults(0, 0, 51820) //nolint:mnd
 	return utils.GetConnection(p.Name(),
 		p.storage, selection, defaults, ipv6Supported, p.randSource)
 }

internal/provider/mullvad/connection_test.go

@@ -38,38 +38,6 @@ func Test_Provider_GetConnection(t *testing.T) {
 			errWrapped: errTest,
 			errMessage: "filtering servers: test error",
 		},
-		"default OpenVPN TCP port": {
-			filteredServers: []models.Server{
-				{IPs: []netip.Addr{netip.AddrFrom4([4]byte{1, 1, 1, 1})}},
-			},
-			selection: settings.ServerSelection{
-				OpenVPN: settings.OpenVPNSelection{
-					Protocol: constants.TCP,
-				},
-			}.WithDefaults(provider),
-			connection: models.Connection{
-				Type:     vpn.OpenVPN,
-				IP:       netip.AddrFrom4([4]byte{1, 1, 1, 1}),
-				Port:     443,
-				Protocol: constants.TCP,
-			},
-		},
-		"default OpenVPN UDP port": {
-			filteredServers: []models.Server{
-				{IPs: []netip.Addr{netip.AddrFrom4([4]byte{1, 1, 1, 1})}},
-			},
-			selection: settings.ServerSelection{
-				OpenVPN: settings.OpenVPNSelection{
-					Protocol: constants.UDP,
-				},
-			}.WithDefaults(provider),
-			connection: models.Connection{
-				Type:     vpn.OpenVPN,
-				IP:       netip.AddrFrom4([4]byte{1, 1, 1, 1}),
-				Port:     1194,
-				Protocol: constants.UDP,
-			},
-		},
 		"default Wireguard port": {
 			filteredServers: []models.Server{
 				{IPs: []netip.Addr{netip.AddrFrom4([4]byte{1, 1, 1, 1})}, WgPubKey: "x"},

internal/provider/mullvad/openvpnconf.go

@@ -2,30 +2,10 @@ package mullvad
 
 import (
 	"github.com/qdm12/gluetun/internal/configuration/settings"
-	"github.com/qdm12/gluetun/internal/constants/openvpn"
 	"github.com/qdm12/gluetun/internal/models"
-	"github.com/qdm12/gluetun/internal/provider/utils"
 )
 
-func (p *Provider) OpenVPNConfig(connection models.Connection,
-	settings settings.OpenVPN, ipv6Supported bool,
-) (lines []string) {
-	//nolint:mnd
-	providerSettings := utils.OpenVPNProviderSettings{
-		AuthUserPass: true,
-		Ciphers: []string{
-			openvpn.AES256cbc,
-			openvpn.AES128gcm,
-			openvpn.AES256gcm,
-		},
-		MssFix:        1320,
-		Ping:          10,
-		RemoteCertTLS: true,
-		TLSCipher:     "TLS-DHE-RSA-WITH-AES-256-GCM-SHA384:TLS-DHE-RSA-WITH-AES-256-CBC-SHA",
-		SndBuf:        524288,
-		RcvBuf:        524288,
-		CAs:           []string{"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"}, //nolint:lll
-		UDPLines:      []string{"fast-io"},
-	}
-	return utils.OpenVPNConfig(providerSettings, connection, settings, ipv6Supported)
+func (p *Provider) OpenVPNConfig(_ models.Connection, _ settings.OpenVPN, _ bool) (lines []string) {
+	panic("OpenVPN is no longer supported by Mullvad as of January 15th, 2026: " +
+		"https://mullvad.net/en/blog/removing-openvpn-15th-january-2026")
 }

internal/provider/mullvad/updater/hosttoserver.go

@@ -34,10 +34,6 @@ func (hts hostToServer) add(data serverData) (err error) {
 	}
 
 	switch data.Type {
-	case "openvpn":
-		server.VPN = vpn.OpenVPN
-		server.UDP = true
-		server.TCP = true
 	case "wireguard":
 		server.VPN = vpn.Wireguard
 	case "bridge":