docker信息registry显示v1和docker运行得到v2

我正在使用下面的docker版本17.03.1-ce

Docker Root Dir: /var/lib/docker Debug Mode (client): false Debug Mode (server): true File Descriptors: 16 Goroutines: 25 System Time: 2017-04-18T11:29:05.226279988+05:30 EventsListeners: 0 Registry: https://index.docker.io/v1/ WARNING: No swap limit support但是当docker pull nginx

Using default tag: latest Error response from daemon: Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)为什么从v2