362cab1d53
0f7436ca54 added code during virtual network startup to wait for DAD (Duplicate Address Detection) to complete if there were any IPv6 addresses on the network. This wait was needed because (according to the commit log) "created problems when [the "dummy" tap device] is set to IFF_DOWN prior to DAD completing". That commit in turn referenced commit db488c7917, which had added the code to set the dummy tap device IFF_DOWN, commenting "DAD has happened (dnsmasq waits for it)", and in its commit message pointed out that if we just got rid of the dummy tap device this wouldn't be needed. Now that the dummy tap device has indeed been removed (commit ee6c936fbb), there is no longer any need to set it IFF_DOWN, and thus nothing requiring us to wait for DAD to complete. At any rate, with the dummy tap device removed, leaving nothing else on the bridge when it is first started, DAD never completes, leading to failure to start any IPv6 network. So, yes, this patch removes the wait for DAD completion, and IPv6 networks can once again start, and their associated dnsmasq process starts successfully (this is the problem that the DAD wait was originally intended to fix) Signed-off-by: Laine Stump <laine@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
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:
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: