Re: [dnsext] Re: EDNS client IP should be opt-in (Was: I-D ACTION:draft-vandergaast-edns-client-ip-00.txt

[Wilmer van der Gaast <[e-mail]>]

On 2 February 2010 21:44, Michael Graff <[e-mail]> wrote:
>> Note that this is already recommended in the first bullet point in
>> 8.2. Indeed we didn't ever intend this to be an "enabled by default"
>> feature.
>
> Then how can this possibly be useful?  This sort of optimization
> requires it to be performed for a large chunk of the users on the net,
> certainly for large ISPs and wireless providers.  While the number of
> servers may indeed be small, the number of clients benefiting from this
> (and therefore using it with or without their knowledge) has to be large.
>
Only clients of open resolvers and customers of ISPs with more peering
points than resolvers will benefit from this. Everybody else can
completely ignore this extension.

So it seems logical to not turn it on by default, also because it puts
significant pressure on caches and generates more load. *If* anyone
would turn it on by default, it'd better be mentioned in capitals in
the release notes.


Wilmer.

-- 
Wilmer van der Gaast, Dublin Traffic SRE.
Google Ireland.