[address-policy-wg] Policy Change Request - Allow address allocations for anycast DNS operation

On 8 Jun, 2004, at 12:17, Andreas Bäß/Denic wrote:

> In the background I had some discussions with several people what is 
> the
> best
> wording for the policy to reflect the discussions that we had on RIPE 
> 47.
>
> I think the outcome of these discussions reflect pretty well what I can
> recall.
> So I would like to ask the workinggroup what you think.
>
> "Operators providing DNS for a zone that is approaching the UDP packet
> size limit due to the number of authoritative servers may be assigned
> PI network prefixes: a /24 IPv4 prefix and/or a /32 IPv6 prefix. These
> prefixes will allow them to anycast the DNS server, as described in RFC
> 3258."
>

I would suggest a slight re-phrase:

"Operators providing DNS for a zone served by a number of name servers 
such that the total response size when including the list of 
nameservers for the zone is close to the UDP packet
size limit may be assigned PI network prefixes for the purpose of 
anycasting name servers, as described on RFC 3258. These shall be: a 
/24 IPv4 prefix and/or a /32 IPv6 prefix."

Given that the issue is the will to anycast due to the  operational 
impact of adding more servers to the list, not just the size of the NS 
RRSET itself.

Also, pardon me asking but would the request be for a /24 per server to 
be anycasted of a /24 per zone administrator?

Joao