# 补记:解决DNS服务AAAA记录频繁查询问题

## 方案

### 让域名服务商拒绝解析AAAA请求

Generally we expect to see IPv6 (AAAA) queries where there are IPv4 (A) queries i.e. we expect to see similar amounts of both. This is because many systems will query for IPv4 and IPv6 then decide which to use based on what was returned. This is necessary in many cases to ensure the reliability of those systems.

It is also necessary for us to process all incoming DNS queries, regardless of whether the name or record type exists. In DNS a specific answer is given to all requests, even ones we don’t have the expected answer for. This is why you see those AAAA queries, and why we bill you for them.