> Subject: Re: [SLUG] IPChains and DNS
> Date: Wed, 22 Nov 2000 16:13:44 +1100
> From: Ken Yap <[EMAIL PROTECTED]>
> To: Sydney Linux Users Group <[EMAIL PROTECTED]>
>
> >I would think it would store ip's, as performing a dns lookup
> > everytime a packet arrives is going to be a _minor_ performance hit!
> > I also doubt ipchains contains a caching nameserver, which would in
> > someway alleviate that problem.
>
> It would be IP addresses because domain names are a userland
> construct. The kernel's IP stack doesn't and shouldn't have to know
> about domain names.
There was a comment before this and to make it clearer. DHCP has a mode
where you map a specific MAC address to a specific IP address this
allows DHCP to be used but the IP's to be consistent. UTS has it set up
this way, the IP is the same whether you boot 95, NT, or some other
incarnation.
Ken
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