[radvd-devel-l] RDNSS Option
pekkas at netcore.fi
Thu Mar 9 14:31:58 EST 2006
On Thu, 9 Mar 2006, Mickaël Guérin wrote:
>> However, the lifetime and preference values are the same for all the
>> DNS server addresses sent using one option, right?
> No, you can put several dns servers and each server can have a different
> preference and lifetime (like specified in the ietf draft).
Correct, but then each DNS server address must be carried in a
separate RDNSS option, which causes overhead. So, you should be able
to avoid that in case you don't need separate lifetime/preference
values for RDNSS_1, RDNSS_2, and RDNSS_3.
> I agree, but this (different lifetime & preference) was a need we
> had (the work was done at school, so we had to follow the teacher's
> instructions -- the teacher was working on working on ad-hoc network
> but I've never understood his needs ;) ) I think it's better to
> follow the draft, there are maybe cases where it can be usefull.
OK, if there is a need for specifying different preferences (I can see
how that could be useful, maybe it's something that should be changed
in the draft as a matter of fact), maybe both approaches should be
supported: multiple RDNSS options and a single RDNSS option with
multiple DNS addresses.
Do you agree that multiple DNS servers in a single RDNSS statement
should also be supported?
Pekka Savola "You each name yourselves king, yet the
Netcore Oy kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
More information about the radvd-devel-l