F11 libvirt / KVM (or virt-manager) iptables firewall setup

[Patrick Mansfield]

Hi -

I keep having to modify my iptables virbr0 that is set up by libvirt (or
virt-manager or ???), so I can use samba from a windows install under KVM.

How do I modify the libvirt iptables/firewall setup?

This worked fine in F9 ... I'm not sure if something changed or I if I
just can't remember what I had to change :-(

-- Patrick Mansfield