Memory leak cause of Comcast DNS problems

Mon Apr 18 03:20:05 UTC 2005

On 4/17/2005 12:29 PM, Florian Weimer wrote:
> * Sean Donelan:
> 
>>Perhaps your DNS software also has a memory leak?  Anyone know which
>>software Comcast was using?  Should other ISPs be concerned they might
>>have the same latent problem in their systems?
> 
> Probably yes, especially if they don't read documentation of their DNS
> software.
> 
> | The maximum amount of memory to use for the server's cache, in
> | bytes. [...] The default is unlimited, meaning that records are
> | purged from the cache only when their TTLs expire.

That was my first guess too.

Most DNS servers don't even have this switch.

-- 
Eric A. Hall                                        http://www.ehsco.com/
Internet Core Protocols          http://www.oreilly.com/catalog/coreprot/