really weird(?) DNS setup on linksys router running DD-WRT

[Aviss,Tyler]

A localhost IP might be valid if one is running some form of DNS- 
caching daemon locally.

(sent from my phone, so please excuse the typos)

On 21-Sep-09, at 7:27 AM, Marcelo Cavalcante <kalibslack-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org>  
wrote:

> Hi,
>
> Why did you put  nameserver 127.0.0.1 in the /etc/resolv.conf?
> 127.0.0.1 is the localhost, just loopback. It means, you're trying  
> to use your own computer to resolve its names.
> It's wrong. Try to remove it from the /etc/resolv.conf and test it.
>
> cheers
> ---
> -  °v°   Marcelo Cavalcante Rocha / Kalib
> - /(_)\  ITIL V3 Foundation Certified | Certified Scrum Master
> -  ^ ^   Usuário Linux #407564 / Usuário Asterisk #1148
> - GNU-Linux - Livre, Poderoso e Seguro
> - TUX-CE Member - www.tux-ce.org
> - Archlinux-br Developer Team - http://archlinux-br.org
> - KDE Brasil Member
> - TLUG Member - Toronto Linux User Group
> - http://www.marcelocavalcante.net
>
>
> On Mon, Sep 21, 2009 at 11:23 AM, Robert P. J. Day <rpjday-L09J2beyid0N/H6P543EQg at public.gmane.org 
> > wrote:
>
>  i figure i might as well bug the tlug list on this one, since the
> location is in TO.
>
>  was helping someone install some linux software this weekend, and
> there seemed to be intermittent network problems (losing ssh login
> sessions), as well as DNS resolvability errors.
>
>  took a look at a couple of the internal linux systems (call them
> 192.168.1.100 and 192.168.1.101), and their /etc/resolv.conf files
> read:
>
>  nameserver 127.0.0.1
>  nameserver 192.168.1.1   (the router)
>  search domain1 domain2
>
> ok, i thought, they'll try to access the router for DNS info.  but
> when i browsed over to the router, it was set up for DNS statically
> with the first two entries:
>
>  192.168.1.100
>  192.168.1.101
>
> am i just confused?  that makes no sense to me.  the internal systems
> will consult the router for DNS, while the router turns around and
> consults the internal systems?  am i missing something here?
> shouldn't the router be set up to consult 3 *external* DNS servers, as
> supplied by whoever their network provider is?  or am i just being
> clueless?
>
> rday
> --
>
> === 
> =====================================================================
> Robert P. J. Day                               Waterloo, Ontario,  
> CANADA
>
>        Linux Consulting, Training and Annoying Kernel Pedantry.
>
> Web page:                                          http://crashcourse.ca
> Twitter:                                       http://twitter.com/rpjday
> === 
> =====================================================================
> --
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