Round-Robin Multiply record & 1 IP

Wael Shahin wael.shahin at gmail.com
Thu Mar 22 16:57:54 UTC 2007


Dear Dmitry,
please try the list they can give you a better answer

----- Original Message ----- 
From: "Dmitry Rybin" <kirgudu at corbina.net>
To: "Wael Shahin" <wael.shahin at gmail.com>
Sent: Thursday, March 22, 2007 7:29 PM
Subject: Re: Round-Robin Multiply record & 1 IP


> Wael Shahin wrote:
>
>> please always send your replies to the list where you can get better 
>> answers.
>
> Now I have:
> $ host vpn
> vpn.domain.net has address 11.22.33.3
> vpn.domain.net has address 11.22.33.4
> vpn.domain.net has address 11.22.33.5
> vpn.domain.net has address 11.22.33.6
> vpn.domain.net has address 11.22.33.7
> vpn.domain.net has address 11.22.33.8
> vpn.domain.net has address 11.22.33.9
> vpn.domain.net has address 11.22.33.10
> vpn.domain.net has address 11.22.33.11
> vpn.domain.net has address 11.22.33.12
> vpn.domain.net has address 11.22.33.13
> vpn.domain.net has address 11.22.33.14
> vpn.domain.net has address 11.22.33.15
> vpn.domain.net has address 11.22.33.16
> vpn.domain.net has address 11.22.33.17
> vpn.domain.net has address 11.22.33.18
> vpn.domain.net has address 11.22.33.19
> vpn.domain.net has address 11.22.33.20
> vpn.domain.net has address 11.22.33.21
> vpn.domain.net has address 11.22.33.22
> vpn.domain.net has address 11.22.33.23
> vpn.domain.net has address 11.22.33.24
> vpn.domain.net has address 11.22.33.25
> vpn.domain.net has address 11.22.33.26
> vpn.domain.net has address 11.22.33.1
> vpn.domain.net has address 11.22.33.2
>
> I need:
> $ host vpn
> vpn.domain.net has address 11.22.33.2
>
> $ host vpn
> vpn.domain.net has address 11.22.33.3
>
> & so on.
>
> Some OS'es can't receive answers via TCP.
>
>>
>>>>> Client's must receive only 1 IP from this list (RR), but not all with 
>>>>> RR
>>>>> rotation.
>>>>>
>>>> Am sorry if i am missing something but why do you need round-robin 
>>>> since you are going to return a fixed IP address everytime?
>>>> are you aware of the rrset-order order fixed;
>>> No. I must receive every time another  IP address from pool, but not 
>>> all.
>>
>> I understand you have been trying to resolve the record by using nslookup 
>> or dig which returns all of the A records in the round-robin. is that 
>> true?
>
> YES! :)
>
>> "Round-Robin.  authoritative name server for the name, when requested the 
>> IP address for that name, returns more than one RR, associating in this 
>> way more than one IP address to the domain name. Name servers, when 
>> queried by a client resolver for this domain name, return one of these IP 
>> addresses in a Round-Robin fashion, distributing the workload of that 
>> domain evenly among all the IP addresses"
> 



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