Re: dhcp problem

[Celejar <celejar@gmail.com>]

On Thu, 29 Mar 2007 20:54:34 +0600
"S. M. Ibrahim (Lavlu)" <smibrahim@gmail.com> wrote:

> My isp is providing me the ip using DHCP. everything fine. But they are
> sending 3 nameserver. And first DNS server is not responding. SO it take
> time to switch to the secound dns. So, it's making problem (slow down).
> I want to keep fix (will not updated or replace by dhcp) the
> /etc/resolv.conf with only 2 nameserver (that are working).
> Any idea, how to do this ?

>From 'man dhclient':

>  The supersede statement
> 
>         supersede [ option declaration ] ;
> 
>        If for some option the client should always  use  a  locally-configured
>        value  or  values rather than whatever is supplied by the server, these
>        values can be defined in the supersede statement.

So if you're using dhclient you could try something like:

supersede domain-name-servers a.b.c d.e.f

Also from the manpage:

>  The request statement
> 
>         request [ option ] [, ... option ];
> 
>        The  request  statement  causes  the  client to request that any server
>        responding to the client send the client its values for  the  specified
>        options.    Only  the  option  names should be specified in the request
>        statement - not  option  parameters.    By  default,  the  DHCP  server
>        requests  the  subnet-mask,  broadcast-address,  time-offset,  routers,
>        domain-name, domain-name-servers and host-name options.

So you could write a request line and omit 'domain-name-servers'.

I have not tried any of this.

HTH,
Celejar