LXC Backup fails after Ceph Public Network Change

[n7qnm]

I just changed my Ceph public network to move it to a separate 2gb network from my "admin" network.

I'm using PBS for backup, running on a VM in my cluster; now, ALL of the backups for my LXCs are failing - the snapshot completes and then backup complains, "can't map drive....".

Help?