Error while running sudo lxd init on a fresh sdk install

[Luís Louro]

After installing the sdk I had to reboot my system to add the current user to the lxd group. After that, I followed the steps to create a default initialization, and I was told to also run

sudo lxd init

which I did, from a terminal. As I'm not sure what to put on the configuration questions, I used default (pressed enter) for all whith this result:

Name of the storage backend to use (dir or zfs) [default=dir]:
Would you like LXD to be available over the network (yes/no) [default=no]?
Would you like stale cached images to be updated automatically (yes/no) [default=yes]?
Would you like to create a new network bridge (yes/no) [default=yes]?
What should the new bridge be called [default=lxdbr0]?
What IPv4 subnet should be used (CIDR notation, “auto” or “none”) [default=auto]?
What IPv6 subnet should be used (CIDR notation, “auto” or “none”) [default=auto]?
error: device already exists

This error message is not very helpfull, I'm not sure how to proceed from here.