New DNS entry will not take effect

[Rashkae]

Karl Larsen wrote:
> Wade Smart wrote:
>> 20080728 0744 GMT-6
>>
>> Yesterday I changed my dns to opendns. I opened the network gui and put in my 
>> opendns addr's but when I went back later, they were not there.
>>
>> Then I found a post on this:
>> sudo gedit /etc/resolv.conf
>>
>> and tried that and still, it did not take. Found another post saying:
>> sudo gedit /etc/dhcp3/dhclient.conf
>>
>> and add:
>> prepend domain-name-servers 208.67.222.222,208.67.220.220;
>>
>> which I did and still it did not take.
>>
>> Im not sure what is up here but surely I dont have to use my ISP's dns.
>>
>> Wade
>>
>>   
>     Hi Wade, I am not sure what a opendns is but in general dns changes 
> take about 3 to 7 days to start working. So please wait awhile and it 
> might start working :-)
> 

Ignore Karl, the rest of us do.  (I won't bother explaining why in this
case unless asked)

Your prepend domain-name-servers was the right way to go.  However, this
will only take effect when your DHCP client requests an IP address from
the ISP, so for these settings to take effect, you need to disable your
network interface then re-enable it.