IPv6 Ideas

Matthew Jakeman m.jakeman at lancaster.ac.uk
Fri Apr 24 18:04:41 UTC 2009

Bob Van Zant wrote:
>> What are your problems with using radvd? I have used it quite a bit on 
>> FreeBSD (6.1) without any hassle. It's even written quite nicely in my 
>> experience so working on patches for it should be quite do-able if 
>> there are features missing.
> He's saying that the router announcements don't contain any DNS server 
> information. There's an extension/option that can be enabled with router 
> advertisements to make it send this information, similar in function to 
> how DHCP sends out extra info like the default gateway, DNS server, NTP 
> server, WINS servers, etc.

Yes but he was also saying that support for the existing RFC to provide 
the RA option does not seem to be present in any of the tools (from what 
I gathered). If the RFC is there then surely this functionality could be 

 From the original message I thought he was having problems getting 
radvd to work at all. This could just be me misunderstanding the mail 

 From my perspective this is one thing that needs significant 
improvement for v6. There are many RFC's/ietf drafts out there that add 
some nifty functionality but support for them in the real world 
applications seems to be lacking somewhat.

> To my knowledge this wasn't around when the Kame guys were working on 
> this stuff. I don't think a lot of time has been spent updating the v6 
> support applications since then and that's why we don't have this feature.
> This isn't a big deal in dual-stack networks because the clients just do 
> DNS over v4 with whatever the DHCP server gave. In a pure-v6 world... In 
> hindsight it's an obvious oversight that it wasn't included in the first 
> place.
> -Bob
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