HELP - Deploying LXD container breaks node networking

Hello - I am following the charms deployment guide for OpenStack using Juju (i.e. here:

I get up to the deployment for mysql-innodb-cluster fine, at the point that charm is deployed the nodes which are targeted for it go to down (agent lost), and I notice that their primary IP is changed (eg. to instead of - they are no longer contactable on the network.

Am I missing a step to configure the container networking? Can’t see anything in the mysql-innodb-cluster charm instructions, or the OpenStack ones…

A pointer in the right direction would be appreciated - don’t mind reading and playing about, but at the moment I’m struggling to even know where to begin looking.