Can I create separate bridges for every lxc user?

I have successfully created unprivileged lxc containers for one user on a system. All of those containers use the default lxcbr0 bridge.

Now I want to allow other users on the system to create unprivileged lxc containers.

How do I create more bridges, one for each of the users? And is it a good idea to do this?

One reason for separate bridges is: keeping the ip-address range separate, so that one user can't hijack the ip addresses allocated to another user's lxc.