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Juan Quintela noticed that when he restarted libvirt he was getting extra iptables rules added by libvirt even though he didn't have any libvirt networks that used iptables rules. It turns out this also happens if the firewalld service is restarted. The extra rules are just the private chains, and they're sometimes being added unnecessarily because they are added separately in a global networkPreReloadFirewallRules() that does the init if there are any active networks, regardless of whether or not any of those networks will actually add rules to the host firewall. The fix is to change the check for "any active networks" to instead check for "any active networks that add firewall rules". (NB: although the timing seems suspicious, this isn't a new regression caused by the recently pushed f5418b427 (which forces recreation of private chains when firewalld is restarted); it was an existing bug since iptables rules were first put into private chains, even after commit c6cbe18771 delayed creation of the private chains. The implication is that any downstream based on v5.1.0 or later that cares about these extraneous (but harmless) private chains would want to backport this patch (along with the other two if they aren't already there)) Signed-off-by: Laine Stump <laine@redhat.com> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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==============================
Libvirt API for virtualization
==============================
Libvirt provides a portable, long term stable C API for managing the
virtualization technologies provided by many operating systems. It
includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware
vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER
Hypervisor.
For some of these hypervisors, it provides a stateful management
daemon which runs on the virtualization host allowing access to the
API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other
languages including Python, Perl, PHP, Go, Java, OCaml, as well as
mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the
website:
https://libvirt.org
License
=======
The libvirt C API is distributed under the terms of GNU Lesser General
Public License, version 2.1 (or later). Some parts of the code that are
not part of the C library may have the more restrictive GNU General
Public License, version 2.0 (or later). See the files ``COPYING.LESSER``
and ``COPYING`` for full license terms & conditions.
Installation
============
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
============
The libvirt project welcomes contributions in many ways. For most components
the best way to contribute is to send patches to the primary development
mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
=======
The libvirt project has two primary mailing lists:
* libvirt-users@redhat.com (**for user discussions**)
* libvir-list@redhat.com (**for development only**)
Further details on contacting the project are available on the website:
https://libvirt.org/contact.html