Docker DNS is not working. But possible to ping ip. In Fedora 32

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In my Fedora 32 machine DNS is working better. DNS lookup is working when ping google.com. 

PING google.com (172.217.160.174) 56(84) bytes of data.
64 bytes from bom05s12-in-f14.1e100.net (172.217.160.174): icmp_seq=1 ttl=117 time=41.5 ms
64 bytes from bom05s12-in-f14.1e100.net (172.217.160.174): icmp_seq=2 ttl=117 time=47.2 ms

I build following simple docker image using default bridge network. (I need bridge network. My issue is working when i using host network. And DockerImage will have more commands) 

FROM tailor/docker-libvips:node-10.9

docker build --tag dinuka/video-file-service-test-sandbox:node-10.9 .
docker run -dit --name video-test-1 dinuka/video-file-service-test-sandbox:node-10.9

I have logged to the container using following command.

docker attach video-test-1

After that i have tried to ping an IP. It is success. 

/# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=116 time=42.5 ms

But it is not working to domain

/# ping google.com
ping: google.com: Temporary failure in name resolution

The container DNS is correct. It is same as my machine name server. 

/# cat /etc/resolv.conf 
# Generated by NetworkManager
nameserver 192.168.1.1

My machine OS is Fedora 32. I have disable selinux and firewalld. I have tried many solutions in stackoverflow. But any can't solve this.

docker fedora dns
1 Answers

You need to manually add masquerading to the network interface:

ZONE=$(sudo firewall-cmd --get-zone-of-interface=<internet facing interface>)
sudo firewall-cmd --zone=$ZONE --add-masquerade --permanent success 
sudo firewall-cmd --reload success
sudo systemctl restart docker
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