On Wed, Apr 2, 2014 at 8:59 AM, Albert ARIBAUD <albert.arib...@free.fr> wrote:
> Le 02/04/2014 17:26, Quintus a écrit :
>>
>> Hi there,
>
>
> Hi Quintus,
>
>
>> with DHPv4, dnsmasq properly converts the hostnames send to it to A
>> records we can query for. It seems however that this is not the case
>> with DHCPv6 and AAAA records; while I can perfectly query for the A
>> record of "atlantis.cable.internal.xxx.eu" (and even the one of
>> "atlantis" without any further qualification is found), querying for its
>> AAAA record just returns NXDOMAIN, i.e. it's not found.
>>
>> Is this a bug, or do I have to enable that feature somehow so it works
>> the same for DHCPv6 as it does for DHCPv4?
>
>
> As per the manpage for dnsmasq, you should set 'ra-names' in the IPv6
> dhcp-range? e.g., instead of
>
>
>>
>> dhcp-range=set:wired6,2001:4dd0:ff00:8918:1::2,2001:4dd0:ff00:8918:1:ffff:ffff:fffe,80,6h
>>
>> dhcp-range=set:wifi6,2001:4dd0:ff00:8918:2::2,2001:4dd0:ff00:8918:2:ffff:ffff:fffe,80,6h
>
>
> Use
>
> dhcp-range=set:wired6,2001:4dd0:ff00:8918:1::2,2001:4dd0:ff00:8918:1:ffff:ffff:fffe,80,6h,ra-names
> dhcp-range=set:wifi6,2001:4dd0:ff00:8918:2::2,2001:4dd0:ff00:8918:2:ffff:ffff:fffe,80,6h,ra-names
>
> From the manpage:
>
> "ra-names  enables  a  mode  which  gives DNS names to dual-stack
> hosts which do SLAAC for IPv6.  Dnsmasq  uses  the  host's  IPv4
> lease  to  derive  the name, network segment and MAC address and
> assumes that the host will also have an IPv6 address  calculated
> using  the  SLAAC  algorithm,  on  the same network segment. The
> address is pinged, and if a reply is received, an AAAA record is
> added  to  the DNS for this IPv6 address. Note that this is only
> happens for directly-connected networks, (not one doing DHCP via
> a  relay) and it will not work if a host is using privacy exten-
> sions.  ra-names can be combined  with ra-stateless and slaac."

There is even an internet draft on this... not that it's found a home
within any working groups:

http://tools.ietf.org/html/draft-taht-kelley-hunt-dhcpv4-to-slaac-naming-00

> Amicalement,
> --
> Albert.
>
> _______________________________________________
> Dnsmasq-discuss mailing list
> Dnsmasq-discuss@lists.thekelleys.org.uk
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-- 
Dave Täht

Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html

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