Fix DNS transports

experimental/libbox/dns.go

@@ -46,6 +46,9 @@ func (p *platformTransport) Close() error {
 	return nil
 }
 
+func (p *platformTransport) Reset() {
+}
+
 func (p *platformTransport) Exchange(ctx context.Context, message *mDNS.Msg) (*mDNS.Msg, error) {
 	response := &ExchangeContext{
 		context: ctx,