Hello,

I have a Debian system where i must dynamic change the DNS resolution of a domain.

I have done a little script that changes file /etc/hosts ( so the domain ip changes too ) but i have seen that this change take a while to become available.

How can i force the reload of /etc/hosts?

Is there any other solution to this problem?

Quick explain: on a first moment, the system must "talk" with the dns server ( in my case 192.168.0.1 ) to find out the domains ip. On other moment, the system must resolve the domain to a specified IP, without asking the dns server.

Thanks.

I'm not sure how to flush DNS in linux, but I think if you restart your network service it will flush out the dns. So in your script, just add something like:

/etc/init.d/networking restart

Of course this will cause you to lose network connection for a second or two.

Do you have a DNS server? IN general, a DNS server can update its record, especially if you have DHCP installed on your network.

Yes, i have a DNS server on my network. But your tip worked ( at least on shell ).

The problem now is on firefox, since it access the old DNS even after clearing cache and reloading the page. Do you any ideas of how can i force firefox to read /etc/hosts again?

Thanks for you help.