Add Tailscale endpoint

common/dialer/dialer.go

@@ -22,6 +22,7 @@ type Options struct {
 	RemoteIsDomain   bool
 	DirectResolver   bool
 	ResolverOnDetour bool
+	NewDialer        bool
 }
 
 // TODO: merge with NewWithOptions
@@ -100,6 +101,8 @@ func NewWithOptions(options Options) (N.Dialer, error) {
 			}
 			dnsQueryOptions.Transport = transport
 			resolveFallbackDelay = time.Duration(dialOptions.FallbackDelay)
+		} else if options.NewDialer {
+			return nil, E.New("missing domain resolver for domain server address")
 		} else {
 			deprecated.Report(options.Context, deprecated.OptionMissingDomainResolver)
 		}