I read the blog below and tested it.
[ URL: https://blog.simos.info/a-network-isolated-container-in-lxd/ ]
When testing, I configured a socket 5 proxy server with ss5 using docker.
The test of ss5 worked fine as shown below.
When I put a socket 5 device in a container, I wonder how to specify the username and password in lxc config device add.