bind 8.2.4: limiting used memory?

Brad Knowles brad.knowles at skynet.be
Tue Aug 7 15:38:57 UTC 2001


At 2:01 PM +0200 8/7/01, Michael Renzmann wrote:

>  That shurely is true. Another thing I did not mention by no
>  is that this "dns cache" should resolve another problem.
>  Currently, many customers have many clients in their network.
>  Each client has the ISP dns configured. Now the IP of the DNS
>  have to be changed. In order to avoid problems like this the
>  router should be the institution that answers to every dns
>  query. Therefor it has to forward the queries to the correct
>  DNS. If it caches the queries or not the main point. It is a
>  side effect. If the effect is nearly useless as you pointed
>  out, we could leave this feature away.

	You could do that by using the firewall/NAT software and simply 
redirecting the DNS queries to the IP address(es) that the device 
itself is configured to know about, and avoiding any actual 
nameserver software at all.

>  In fact DJB wrote a nice program that seems to do what I
>  want. But it seems to depend on his own daemontools, which I
>  don't want to introduce as well to the system besides the
>  dnscache program. But this is offtopic here.

	I have a whole list of reasons why you should avoid using his 
programs.  I've articulated a number of them on this mailing list, 
and you may want to see the archives to read them.  At this point, I 
think I'm up to about #22, although I haven't yet updated the written 
list to this point.

>  Intrinsync is currently testing a new version of the
>  CerfBoard which has a pcmcia port instead of the compact
>  flash port. This is the better solution for usage with
>  802.11b wlans as such cards for pcmcia are much cheaper than
>  those fitting the compact flash socket. Besides that I doubt
>  there will be a lack of drivers for the compact flash
>  versions of cards in the next months.

	Certainly, a PC Card interface would make it a lot easier to add 
a current WLAN card, and hopefully they would have other improvements 
as well (more RAM on-board, more flash RAM built-in, etc...). 
However, if push came to shove, I think I could get it done with the 
current model of the CerfBoard and/or the CerfCube.

-- 
Brad Knowles, <brad.knowles at skynet.be>

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