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Dnsmasq needs to advertise the global address, I think. Receiving RAs
shouldn't be a problem, dnsmasq binds the correct multicast address.

Cheers,

Simon.


On 16/07/15 16:27, Michal Zatloukal wrote:
> Hi all,
> 
> I'm using dnsmasq (2.68-1ubuntu0.1) on a machine where the need to
> run tftpd-hpa along with dnsmasq's own tftp server has arisen (both
> on just IPv4). I decided to use the "secondary IP address" feature
> in Linux networking system to bind tftpd-hpa to the secondary IP
> address, and set up dnsmasq to bind the following: - primary IPv4
> address - localhost IPv4 - For IPv6, I put in localhost, global and
> link-local addresses. IIUC, RA can't work in this config, since the
> destination on RS is multicast ff02::2 and therefore aren't
> delivered to any of the sockets opened by dnsmasq.
> 
> Now, which IPv6 address do I enter so that IPv6 router
> announcements work correctly? (Is it even possible?) - adding
> ff02::2 doesn't work, dnsmasq reports error in syslog - cannot bind
> to this address. - replacing all IPv6 addresses with "::" allows
> dnsmasq to start and bind to wildcard IPv6, but it seems incoming
> RS packets are ignored - nothing appears in syslog when clients
> send solicitation. Is the filtering code in DSNmasq perhaps not
> expecting a wildcard address in the listen-address parameter and
> filters packets against it?
> 
> Regards,
> 
> MZ
> 
> _______________________________________________ Dnsmasq-discuss
> mailing list Dnsmasq-discuss@lists.thekelleys.org.uk 
> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
> 
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