<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
<limit name="max_match_rules_per_connection">4096</limit>
</busconfig>
It hooks into libvirt for this, so I can also manage them via virsh et al, but it's a nice tool to set up the essentials of a VM and provide remote access to the VM console.