Re: DNS forwarders

[Neal Becker <ndbecker2 gmail com>]

Dan Williams wrote:

> On Sat, 2008-02-23 at 19:36 -0800, Howard Chu wrote:
>> I run a caching named on my laptop, so I've configured my dhclient to
>> write any received DNS server addresses into an
>> /etc/named/forwarders.conf file instead of /etc/resolv.conf. However,
>> NetworkManager still overwrites my resolv.conf with the remote DNS server
>> addresses, even though I've changed my /etc/sysconfig/network options and
>> told it not to update resolv.conf any more. (I think I already restarted
>> NetworkManager too, so it ought to have read the new config.)
> 
> NetworkManager takes over /etc/resolv.conf while it's running, and
> there's an interface to send forwarders to a D-Bus service run by named
> that will act as a caching nameserver.  If you're running F8 though,
> that may have been removed from your named packages already, as it's
> somewhat in flux upstream.
> 
>> It seems to me that updating resolv.conf is always the wrong thing to do
>> anyway; my computer's FQDN is what it is, no matter what network I
>> connect to. Why should my resolv.conf's domain and search list change
>> just because I've moved to a different physical location?
> 
> NM may get DNS information from multiple sources, including VPN,
> mulitple devices, etc.  If you're running in a caching nameserver
> situation with a D-Bus enabled caching nameserver that can talk to NM,
> you'll only ever see "127.0.0.1" in /etc/resolv.conf.
> 
> Dan
Please see my solution:
http://nbecker.dyndns.org:8080/misc/local_caching_ns.pdf