Google Chrome: Error 21 (net::ERR_NETWORK_CHANGED)
Solution 1:
Are you using Docker? Do you have Docker networks? Try removing them (except for bridge, host and none). That fixed it for me.
I'm using Kubuntu 16.10 on a Dell Inspiron 13 (5000 series, Intel Corporation Wireless 3165 (rev 79)). This issue used to happen with both IPv4 and IPv6 networks, and both wired and wireless.
You can remove all unused Docker networks with the command:
docker network prune