[Dnsmasq-discuss] localise-queries and IPv6

Dave Taht dave at taht.net
Fri Aug 23 03:21:56 BST 2019

Simon Kelley <simon at thekelleys.org.uk> writes:

> On 06/08/2019 18:14, Carsten Spieß wrote:
>> Hello Simon,
>>>> I've added entries for a multi homed machine to the hosts file.
>>>> For IPv4 i get one address localized to the caller,
>>>> for IPv6 i get a list of all addresses.
>>>> The man page notes for localise-queries 'Currently this facility is limited to IPv4.'
>>>> Is there any technical reason for this behaviour or is there just 'a bit work to be done'?
>>> The technical reason is limited to "it's not obvious that this nasty
>>> hack is useful for IPv6" If it could be demonstrated to be useful,
>>> there's nothing to stop if being implemented for IPV6, as far as I know.
>> Is a multi homed machine not a usefull scenario in IPv6?

IPv6 multi-homing is more difficult without SADR and without source
specific RA. SADR is pretty common now...

>> This would avoid unnecessary routing (as in IPv4).
>> Regards, Carsten
> IPv6 seems to use a lot of /128 routes, with transits of the router even
> for machines on the same network. Nevertheless, your point is a good one.

Heh. If you want to try for something about ipv6 inside dnsmasq that
scales, rtod ( https://github.com/dtaht/rtod ) is useful. See the README
for how it works.

bloom filter per interface?

> Simon.
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