Network timed out while trying to connect to https://index.docker.io

Question

I installed Docker-Toolbox just now while following their webpage

I started with Docker QuickStart Terminal and see following

Answer 1

I just ran into this today with 1.10.1 and none of the existing solutions worked. I tried to restart, upgrade, regenerate certs, ...

I noticed that I had a lot of networks created on the machine. After removing them with:

docker network ls | grep bridge | awk '{print $1}' | xargs -n1 docker network rm

The DNS started working again.

Note: You may ignore errors about pre-defined networks