[libvirt] [PATCHv3] Support for static routes on a virtual bridge

[Gene Czarcinski]

On 04/11/2013 08:11 AM, Gene Czarcinski wrote:
> This patch adds support for adding a static route for
> a network.  The "gateway" sub-element specifies
> the gateway's IP address.  Both IPv4 and IPv6
> static routes are supported although it is
> expected that this functionality will have
> more use with IPv6.
>
> This updates add the <route> element to define a
> static route.  The gateway= subelement species the
> gateway address which is to receive the packets
> forwarded to the network specified on the
> <route> definition.
>
> Tests are done to validate that the input definitions are
> correct.  For example, for a static route ip definition,
> the address must be a network address and not a host address.
> Additional checks are added to ensure that the specified gateway
> has a network defined on this bridge.
>
> Whan a static route is added to a bridge, there is a slight
> possibility that the gateway address will be incorrect.  If
> this is handled as an error, that bridge becomes unusable and
> can only be recovered by rebooting.  If the error is
> ignored, then that network can be destroyed and the network
> definition file edited to correct the problem.  Unfortunately,
> the error message only appears in syslog.  However, with
> the checks performed when the network definition file is parsed,
> it is unlikely that this condition will ever occur.
>
> The command used is of the following form:
>
> ip route add <address>/<prefix> via <gateway> dev <virbr-bridge> \
> proto static metric 1
Ping!

I am trying to finalize an update for virt-manager which will support 
static routes but I need to know the final form of the definition.  Is 
the following [as implemented in this patch] OK?

     <route family='ipv6'  address='fd00:beef:27:4::' prefix ='64' 
gateway='fd00:beef:10:7::1:2' />

Gene