add MTU flag for vpn up

src/cmd/vpnUp.go

@@ -35,6 +35,7 @@ func vpnUpCmd() *cmdBuilder.Cmd {
 		Short(i18n.T(i18n.CmdDescVpnUp)).
 		ScopeLevel(scope.Project).
 		Arg(scope.ProjectArgName, cmdBuilder.OptionalArg()).
+		IntFlag("mtu", 1420, i18n.T(i18n.VpnMtuFlag)).
 		BoolFlag("auto-disconnect", false, i18n.T(i18n.VpnAutoDisconnectFlag)).
 		HelpFlag(i18n.T(i18n.CmdHelpVpnUp)).
 		LoggedUserRunFunc(func(ctx context.Context, cmdData *cmdBuilder.LoggedUserCmdData) error {
@@ -98,7 +99,7 @@ func vpnUpCmd() *cmdBuilder.Cmd {
 			}
 			defer f.Close()
 
-			err = wg.GenerateConfig(f, privateKey, vpnSettings)
+			err = wg.GenerateConfig(f, privateKey, vpnSettings, cmdData.Params.GetInt("mtu"))
 			if err != nil {
 				return err
 			}

src/i18n/en.go

@@ -246,6 +246,7 @@ at https://docs.zerops.io/references/cli for further details.`,
 	ServiceIdFlag:         "If you have access to more than one service, you must specify the service ID for which the\ncommand is to be executed.",
 	ProjectIdFlag:         "If you have access to more than one project, you must specify the project ID for which the\ncommand is to be executed.",
 	VpnAutoDisconnectFlag: "If set, zCLI will automatically disconnect from the VPN if it is already connected.",
+	VpnMtuFlag:            "If set, Wireguard interface will use this value for MTU. If VPN is not working, try a lower value.",
 	ZeropsYamlSetup:       "Choose setup to be used from zerops.yml.",
 
 	// archiveClient

src/i18n/i18n.go

@@ -228,6 +228,7 @@ const (
 	ServiceIdFlag         = "ServiceIdFlag"
 	ProjectIdFlag         = "ProjectIdFlag"
 	VpnAutoDisconnectFlag = "VpnAutoDisconnectFlag"
+	VpnMtuFlag            = "VpnMtuFlag"
 	ZeropsYamlSetup       = "ZeropsYamlSetup"
 
 	// archiveClient

src/wg/darwin.go

@@ -26,8 +26,8 @@ func CheckWgInstallation() error {
 	return nil
 }
 
-func GenerateConfig(f io.Writer, privateKey wgtypes.Key, vpnSettings output.ProjectVpnItem) error {
-	data, err := defaultTemplateData(privateKey, vpnSettings)
+func GenerateConfig(f io.Writer, privateKey wgtypes.Key, vpnSettings output.ProjectVpnItem, mtu int) error {
+	data, err := defaultTemplateData(privateKey, vpnSettings, mtu)
 	if err != nil {
 		return err
 	}
@@ -46,6 +46,7 @@ func DownCmd(ctx context.Context, filePath, _ string) (err *cmdRunner.ExecCmd) {
 var vpnTmpl = `
 [Interface]
 PrivateKey = {{.PrivateKey}}
+MTU = {{.Mtu}}
 
 Address = {{if .AssignedIpv4Address}}{{.AssignedIpv4Address}}/32{{end}}, {{.AssignedIpv6Address}}/128
 PostUp = mkdir -p /etc/resolver 

src/wg/linux.go

@@ -27,8 +27,8 @@ func CheckWgInstallation() error {
 	return nil
 }
 
-func GenerateConfig(f io.Writer, privateKey wgtypes.Key, vpnSettings output.ProjectVpnItem) error {
-	data, err := defaultTemplateData(privateKey, vpnSettings)
+func GenerateConfig(f io.Writer, privateKey wgtypes.Key, vpnSettings output.ProjectVpnItem, mtu int) error {
+	data, err := defaultTemplateData(privateKey, vpnSettings, mtu)
 	if err != nil {
 		return err
 	}
@@ -47,6 +47,7 @@ func DownCmd(ctx context.Context, filePath, _ string) (err *cmdRunner.ExecCmd) {
 var vpnTmpl = `
 [Interface]
 PrivateKey = {{.PrivateKey}}
+MTU = {{.Mtu}}
 
 Address = {{if .AssignedIpv4Address}}{{.AssignedIpv4Address}}/32{{end}}, {{.AssignedIpv6Address}}/128
 PostUp = resolvectl dns %i {{.Ipv4NetworkGateway}}

src/wg/wg.go

@@ -2,13 +2,14 @@ package wg
 
 import (
 	"net"
+	"strconv"
 
 	"github.com/pkg/errors"
 	"github.com/zeropsio/zerops-go/dto/output"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 )
 
-func defaultTemplateData(privateKey wgtypes.Key, vpnSettings output.ProjectVpnItem) (map[string]string, error) {
+func defaultTemplateData(privateKey wgtypes.Key, vpnSettings output.ProjectVpnItem, mtu int) (map[string]string, error) {
 	projectIpv4Network := ""
 	if vpnSettings.Project.Ipv4.Network.Network != "" {
 		_, n, err := net.ParseCIDR(string(vpnSettings.Project.Ipv4.Network.Network))
@@ -46,6 +47,7 @@ func defaultTemplateData(privateKey wgtypes.Key, vpnSettings output.ProjectVpnIt
 	}
 
 	return map[string]string{
+		"Mtu":                       strconv.Itoa(mtu),
 		"PrivateKey":                privateKey.String(),
 		"PublicKey":                 string(vpnSettings.Project.PublicKey),
 		"AssignedIpv4Address":       string(vpnSettings.Peer.Ipv4.AssignedIpAddress),

src/wg/windows.go

@@ -33,8 +33,8 @@ func CheckWgInstallation() error {
 	return nil
 }
 
-func GenerateConfig(f io.Writer, privateKey wgtypes.Key, vpnSettings output.ProjectVpnItem) error {
-	data, err := defaultTemplateData(privateKey, vpnSettings)
+func GenerateConfig(f io.Writer, privateKey wgtypes.Key, vpnSettings output.ProjectVpnItem, mtu int) error {
+	data, err := defaultTemplateData(privateKey, vpnSettings, mtu)
 	if err != nil {
 		return err
 	}
@@ -117,6 +117,7 @@ func DownCmd(ctx context.Context, _, interfaceName string) (err *cmdRunner.ExecC
 var vpnTmpl = `
 [Interface]
 PrivateKey = {{.PrivateKey}}
+MTU = {{.Mtu}}
 
 Address = {{if .AssignedIpv4Address}}{{.AssignedIpv4Address}}/32{{end}}, {{.AssignedIpv6Address}}/128
 DNS = {{.Ipv4NetworkGateway}}, zerops