Can't ping from within a Docker Container

We have docker running at digitalocean. It seams that from within my docker containers, I cannot reach the internet anymore. When I go into the containers and run “ping” to ping a Google DNS server, it does not work.

This used to work when we first set the Docker Containers up.

Is there any changes done to the networking parts at DigitalOcean? Is there any DigitalOcean firewalls settings we must have in place?

Ping from the droplet server works fine btw. Its inside of the Docker Containers that it doesn’t work.

I need to renew a Letsencrypt SSL cert, for instance, and this does not work because the Docker Container does not have internet connection, it seems.

Please help

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I’ve had a similar issue recently and I was able to get this working by simply restarting docker:

systemctl restart docker

Then this started working as normal.

Regards, Bobby

Thank you very much! Fixed my problem completely.