[Dnsmasq-discuss] Re: IPV6

Philippe Faure philippe at faure.ca
Thu Apr 2 13:48:31 BST 2009


I know that DNSMASQ doesn't support DHCPv6, is there going to be  
support for it in the future?

Apparently there are specifications for it now. Thank you Jan for this  
bit of information.

>> But that doesn't help with explaining how to use the DNS portion
>> (configuration). With IPv4 there are time server, dns search orders, etc
>> that can be sent to the client when it connects via DHCP, but if DHCP
>> doesn't exist anymore for IPv6, how is that information sent to each
>> client?

> First: Yes, after a long time of "No DHCP, it is evil", they gave up and now
> there is a DHCPv6 (RFC3315), unfortunately it not implemented by dnsmasq.
>> How is the DNS server made aware that the client has connected?

> The magic words are is Zeroconf/mDNS on FE02::FB and Link Local  
> Multicast Name
> Resolution (RFC4795) on FF02::1:3.

> The client should tell other clients by means of multicast that he  
> is there, >and try to find a Service-Provider for "real" DNS over  
> this, where he than can > make a update.
> Yeah i know, not very convenient when it does not come in one handy  
> program >like dnsmasq...
>> Philippe


> Greetings
>        Jan

>
> Those are all part of DHCP.  dnsmasq isn't capable of DHCPv6, you'll need to
> configure your client some other way (like running a DHCPv6 server or manual
> configuration).
> I don't know what you mean by "How is the DNS server made aware that the
> client has connected?", since DNS connections between clients and servers
> use UDP which is connectionless (in general only zone transfers between peer
> servers are TCP).  The client isn't connected, it just sends a datagram
> containing a request and dnsmasq sends a response back to the address whence
> the datagram came.
>
> On Thu, Apr 2, 2009 at 12:55 AM, Philippe Faure <philippe at faure.ca> wrote:
>
>> Thank you Richard for your comments.
>>
>> But that doesn't help with explaining how to use the DNS portion
>> (configuration). With IPv4 there are time server, dns search orders, etc
>> that can be sent to the client when it connects via DHCP, but if DHCP
>> doesn't exist anymore for IPv6, how is that information sent to each client?
>>
>> How is the DNS server made aware that the client has connected?
>>
>> Philippe





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