-- Sunday, February 29, 2004 23:08:28 +0200 Pekka Savola
<[EMAIL PROTECTED]> wrote/a ecrit:

> On Mon, 1 Mar 2004, Jun-ichiro itojun Hagino wrote:
>> > On Sun, 29 Feb 2004, Jun-ichiro itojun Hagino wrote:
>> > >  the issue here is NOT whether or not DHCP-assigned, but the
>> > >  stability of IPv4 address.  i'm not sure what is the best way to
>> > >  phrase it.
>> > 
>> > Are there specific problems of stability of such an address?  Could 
>> > you elaborate?
>> 
>>      changing NS for x.x.x.x.x.x.x.x.2.0.0.2.ip6.int. every hour is not
>>      pretty.  
> 
> True.  But many DHCP's are much more longer-lived than that.  
> Actually, if your address is changing hourly, you probably won't 
> bother to go register (manually, through webbrowser!) the reverse 
> mapping every time it changes.

sorry don't agree. 
 - not only no user will ever change their reverse mapping (they don't know
what that mean anyway)
 - but does not scale well: think of millions of users updating frequently. 

> 
> So there is already a control mechanism in place :-).
> 
> But if folks think that makes sense, I guess one could replace the
> current "DHCP might bite you" text with something describing that the
> users might not bother to update their reverses if their address
> changes too often -- and that that's a feature! Additionally, one
> could mention that the system could include a "rate-limiting" if this
> is seen as a problem.  E.g., that you can only change the reverse
> records corresponding to an address once a day, or whatever.
> 
> 
> (Some DHCP addresses/provides provide quite stable addresses.  My home 
> address stayed stable for over a year -- I haven't even bothered to 
> get a static one.  But there are probably operators who intentionally 
> keep the leases short.)

an architecture of operations should not be based on some "current"
practice of some operators, if in case of this practice changes, the
scalability won't work anymore. 

Marc.


> 
> -- 
> Pekka Savola                 "You each name yourselves king, yet the
> Netcore Oy                    kingdom bleeds."
> Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
> 
> .
> dnsop resources:_____________________________________________________
> web user interface: http://darkwing.uoregon.edu/~llynch/dnsop.html
> mhonarc archive: http://darkwing.uoregon.edu/~llynch/dnsop/index.html



------------------------------------------
Marc Blanchet
Hexago
tel: +1-418-266-5533x225
------------------------------------------
http://www.freenet6.net: IPv6 connectivity
------------------------------------------
.
dnsop resources:_____________________________________________________
web user interface: http://darkwing.uoregon.edu/~llynch/dnsop.html
mhonarc archive: http://darkwing.uoregon.edu/~llynch/dnsop/index.html

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