Is this a new feature request?

• I have searched the existing issues

Wanted change

Bind to both IPv6 and IPv4 address by default, which a option to disable IPv6 if there any issues.

Reason for change

I use IPv6 and I could not connect to it via IPv6.

Proposed code change

Changing the bind address to IPv6 as mentioned comment below, will listing it in both IPv4 and IPv6.

coder/code-server#261 (comment)