Changing MTU value

Docker Engine General
2 
Issue type: Bug

OS Version/build: Ubuntu 18.04 18.04.4 LTS (Bionic Beaver)

App version: 19.03.11 ( have tried downgrading as well)

Steps to reproduce: When the docker0 mtu value is equal to wlan mtu value we can not download packages inside a docker container neither we can curl google.com

Tried:

  1. mtu: 1450 in /etc/default/daemon.json

  2. Tried passing mtu value to dockerd in ExecStart

  3. Tried re-install docker as well and all the available solutions on different blogs.

I am not able to access internet from my containers because of this.

Any leads are highly appreciated.