Re: DNS Error

[Alexey Fadyushin <fab s-tunnel com>]

You have a problem with DNS name resolution. Most probably there are no 
nameserver records in the /etc/resolv.conf  file on your computer. When 
you use option 'usepeerdns'  in /etc/ppp/options PPP daemon will accept 
list of DNS servers from your provider and put appropriate 'nameserver' 
records in file /etc/ppp/resolv.conf. Therefore, you need to copy that 
file to /etc/resolv.conf when connection is established (you also may 
use a symbolic link instead of copying the file). If your ISP does not 
transmit DNS server addresses when your computer connects to ISP, you 
can ask your ISP about those addresses and manually put them into 
/etc/reslov.conf. Alternatively, you could run your own DNS server 
(caching only) on your computer.

Alexey Fadyushin
Brainbench MVP for Linux.
http://www.brainbench.com


Vasco DionМsio wrote:

> Hello,
>
> I installed a ADSL Modem that uses unicorn chipset (IceData500), 
> compiled the drivers, and configured pppoe to connect to my ISP 
> Provider. I am using Red Hat 7.3. Everything went fine and I am able 
> to connect to my ISP (when I do a ifconfig I can see the connection 
> and I am able to ping the DNS servers of the ISP). My problem is that 
> if I do a ping with a name I get an error message saying "host 
> unknow". For instance, if I do ping www.google.com I get the error 
> message but if I do ping xxx.xxx.xxx.xxx for the DNS address of the 
> ISP everything goes fine. Could anyone give some hints please. I am 
> new to linux...
>
> Thanks in advance,
> Vasco
>
> Here's my /etc/ppp/options
>
> lock
> ipparam ppp0
> noipdefault
> noauth
> defaultroute
> user "user domain ext"
> noaccomp
> noccp
> nobsdcomp
> nodeflate
> nopcomp
> novj
> lcp-echo-interval 20
> lcp-echo-failure 3
> maxfail 25
> updetach
> usepeerdns
> holdoff 4
> persist
>
> Here's how I connect
>
> #modprobe unicorn_usb_eth PROTOCOL=pppoe ActivationMode=1 VPI=0 VCI=35 
> ENCAPS=llc-encaps
>
>
> #ifconfig dsl0 up
> #pppd pty 'pppoe -I dsl0 -m 1452'
>
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