mutual forwarders in ISC BIND

[Da Rock]

On 12/29/11 12:45, Kevin Wilcox wrote:
> On Dec 28, 2011 9:26 PM, "Victor Sudakov"<vas at mpeks.tomsk.su>  wrote:
>
>> And the reason for the whole thread. One of the customers told me that
>> 8.8.8.8 is faster than our own DNS servers which are located on the
>> same 100 MBit/s LAN with them. I was shocked but it seems true, at
>> least for the answers which are not yet cached.
> That actually makes perfect sense. That's one of the Google DNS IP
> addresses and they see a LOT of traffic, they're probably going to have the
> majority of the domains your clients want to look up (assuming your clients
> are like mine and most of their lookups are general web traffic) already in
> cache - your servers will need to go through the whole lookup process.
>
> Still, after a day or two of use, I would think your servers would have the
> bulk of what they needed in their caches. You may want to enable logging to
> see which domains are being looked up (if it won't break any applicable
> laws or policies) and do some spot-checks to see why they may not be in
> your cache.
>
A rather amusing observation would be that they're not in the cache 
because the clients are using 8.8.8.8 ...