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Re: [libvirt] dnsmasq supporting RA instead of radvd patch



Gene Czarcinski wrote:
>  I have a working patch to have dnsmasq support RA instead of radvd. 
> However, something has come up and it will be a week to ten days
> before I can get it in shape to submit.
>
> The current patch has three variables added to the _virNetworkObj
> structure: dnsmasqRA flag and both major and minor values for the
> dnsmasq's version.
>
> I use "dnsmasq --version" and then parse out the major/minor version
> values.  If major>2, then dnamsqFA=1.  If major=2 and minor>=63, then
> dnsmasqRA=1.  For all other cases, dnsmasqRA=0.
>
> Code is added to the radvd functions which checks dnsmasqRA and exits
> if it is 1.
>
> Code is added to the dnsmasq configuration file if dnsmasqRa=1.  If
> dhcp-range or dhcp-hosts is specified for IPv6, then enable-ra is
> added for stateful (dhcpv6).  Otherwise, a special
> "dhcp-range=<ipv6-subnet-address>,ra-only" so that the ManagedFlag
> will be off in the RA packets for stateless operation.
>
> OK, how does that sound?  Everyone comfortable with that?
>
> Another thing is that I plan to add a test such that if the radvd
> executable is not valid, the dnsmasqRA=1.
>
> As I was doing this, I also looked through the libvirt.spec file. My,
> what a wonderful example of wizardly that is.  Anyway, I thought some
> updates may be in ortder:
>
> - increase the minimum version for dnsmasq from 2.41 to 2.48.

The SLE11 code stream, which will be active for quite some years, has
version 2.45 :(.  Why is 2.48 needed?  The feature you are after is in
2.63 right?

Regards,
Jim

>
> - why is radvd required for rpmbuild?
>
> - in light of my patch, make radvd an optional runtime requirement. I
> am not a spec file expert by any means but there must be a way to not
> require radvd if dnsmasq >- 2.63.
>
> Comments?
>
> Gene
>
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