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Disable Windows DNS registration

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i40e 2023-10-10 13:26:34 +08:00 • committed by 世界
parent 1a85bd3ef4
commit efd9884154
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GPG key ID: CD109927C34A63C4
3 changed files with 40 additions and 4 deletions
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22
internal/winipcfg/luid.go
View file

@ -385,3 +385,25 @@ func (luid LUID) SetDNS(family AddressFamily, servers []netip.Addr, domains []st
func (luid LUID) FlushDNS(family AddressFamily) error {
return luid.SetDNS(family, nil, nil)
}
func (luid LUID) DisableDNSRegistration() error {
guid, err := luid.GUID()
if err != nil {
return err
}
dnsInterfaceSettings := &DnsInterfaceSettings{
Version: DnsInterfaceSettingsVersion1,
Flags: DnsInterfaceSettingsFlagRegistrationEnabled,
RegistrationEnabled: 0,
}
// For >= Windows 10 1809
err = SetInterfaceDnsSettings(*guid, dnsInterfaceSettings)
if err == nil || !errors.Is(err, windows.ERROR_PROC_NOT_FOUND) {
return err
}
// For < Windows 10 1809
return luid.fallbackDisableDNSRegistration()
}

19
internal/winipcfg/netsh.go
View file

@ -51,10 +51,11 @@ func runNetsh(cmds []string) error {
}
const (
netshCmdTemplateFlush4 = "interface ipv4 set dnsservers name=%d source=static address=none validate=no register=both"
netshCmdTemplateFlush6 = "interface ipv6 set dnsservers name=%d source=static address=none validate=no register=both"
netshCmdTemplateAdd4 = "interface ipv4 add dnsservers name=%d address=%s validate=no"
netshCmdTemplateAdd6 = "interface ipv6 add dnsservers name=%d address=%s validate=no"
netshCmdTemplateFlush4 = "interface ipv4 set dnsservers name=%d source=static address=none validate=no"
netshCmdTemplateFlush6 = "interface ipv6 set dnsservers name=%d source=static address=none validate=no"
netshCmdTemplateAdd4 = "interface ipv4 add dnsservers name=%d address=%s validate=no"
netshCmdTemplateAdd6 = "interface ipv6 add dnsservers name=%d address=%s validate=no"
netshCmdTemplateDisableRegistration = "interface ipv6 set dnsservers name=%d register=none"
)
func (luid LUID) fallbackSetDNSForFamily(family AddressFamily, dnses []netip.Addr) error {
@ -106,3 +107,13 @@ func (luid LUID) fallbackSetDNSDomain(domain string) error {
key.Close()
return err
}
func (luid LUID) fallbackDisableDNSRegistration() error {
// the DNS registration setting is shared for both IPv4 and IPv6
ipif, err := luid.IPInterface(windows.AF_INET)
if err != nil {
return err
}
cmd := fmt.Sprintf(netshCmdTemplateDisableRegistration, ipif.InterfaceIndex)
return runNetsh([]string{cmd})
}

3
tun_windows.go
View file

@ -88,6 +88,9 @@ func (t *NativeTun) configure() error {
return E.Cause(err, "set ipv6 dns")
}
}
if len(t.options.Inet4Address) > 0 || len(t.options.Inet6Address) > 0 {
_ = luid.DisableDNSRegistration()
}
if t.options.AutoRoute {
if len(t.options.Inet4Address) > 0 {
if len(t.options.Inet4RouteAddress) > 0 {