[Dnsmasq-discuss] [PATCH] RADV: Send same RDNSS address as in DHCPv6

[Pali Rohár]

On Friday 01 January 2016 20:58:42 Simon Kelley wrote:
> Does the existing behaviour cause you problems? The rationale for why
> it behaves the way it does is that link-local addresses are good IF
> client and server are on the same link, since there's no possibility
> of addresses changing or renumbering. A client getting DNS server
> addresses from RADV is by definition on the same link as the server.
> One getting DNS addresses by DHCP is not (there may be a DHCP relay
> involved) but has DHCP to handle renumbering.

Hi! Reason is to provide same data over DHCPv6 and over RA. This is 
really useful to have consistency of connection data in whole network.

When different addresses are sent over DHCPv6 and RA, correct client 
behaviour is to use both (different) addresses in DNS configuration.

But when I'm running one SW which doing everything needed for IPv6 
client subnetwork configuration I would expect that this SW provide same 
data over all channels. Currently redundant information over DHCPv6 and 
RA is only DNS (for now).

-- 
Pali Rohár
pali.rohar at gmail.com
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