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Re: Why does resolv.conf keep changing?




On Mon, Oct 23, 2017 at 05:03:30PM -0400, Gene Heskett wrote:
> On Monday 23 October 2017 11:48:36 Jude DaShiell wrote:
> 
> > If you've got dynamic ip addresses as many of us do, that file has to
> > change to keep your internet connection up.
> >
> This true, but all the isp's I have dealt with over the last 23 years, 
> have all assigned that dynamic address BASED on the MAC of the device 
> doing the requesting. So while my router(s) do use dhcp to get its 
> internet address, I can even swap routers as long as I clone the 
> originals MAC address into the replacement.
> 

You're conflating two different things, Gene.

DHCP assigns a dynamic IP address. That's the main job. And it
will provide a default router along with that. The original
poster wants that.

It also has lots of optional bits of data that it can provide,
but doesn't have to. Among those:

- DNS server addresses
- default domain names
- NTP servers
- TFTP servers
- NFS servers

The original poster does not want their machine to pay attention
to any of that, even if it is supplied.

The full list, I think, is a little overwhelming:

https://www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameters.xhtml

-dsr-