Help with /etc/resolv.conf updates - dnsmasq

[Matthew Kuiken]

Carthik Sharma wrote:
>
> As an aside, how often do the NS ip addresses for an ISP change? If
> they don't change, ever, then I will be good by creating a copy of my
> current resolv.conf and pointing dnsmasq to the copy for non-cached NS
> lookups.
>
> I am sorry if some of the above is unclear - please ask and I will
> explain what I mean, if that is the case.

It wasn't entirely clear, but I think I understood.  I can't help with 
your main question, but in regards to the NS addresses for your ISP, I 
have an opinion.

I don't believe that name servers change IP addresses very often.  
Mainly because of the amount of time the change would take to propagate 
through the network, and the difficulty of dealing with customer calls 
when the DNS stops working for them.  I have not ever noticed that my 
ISP's name servers changed addresses.  I don't watch them all that 
closely either though.  If they do change, I would think that it would 
be such an infrequent change that manual updating of your configuration 
file would not be a real issue.

Hmm, now that I look at it, this really doesn't answer anything, as it 
just presents my opinion, and does not help you with the overwrite of 
resolve.conf by the DHCP lookup.  I'm sorry that I really can't be of 
more concrete help.

-Matt