Hello.

I have set up a fc6 linux DNS server with bind. I am having a weird problem. My network consists of a windows XP PC, a linux PC and a USR 9108A dsl router. I ve put as a default DNS server to my router and windows PC the linux PC. I have not put any secondary dns servers. My default getway is the USR router. My /etc/resolv.conf file has only one nameserver 127.0.0.1. No errors when named starts. What is weird is that for some reason whenever the linux PC is on i can connect normaly to the web sites. How does linux resolve the DNS addresses since i have no options about any other DNS servers on any bind configuration file neither on the /etc/resolv.conf. When the linux PC is off web sites do not work. Is there any other file in fc6 that has information about external DNS servers ?

Most probably your dns is setup as a caching dns, that's why you can resolve domains when it's on and you cannot do it when it's off. Check your named.conf for the zone "." (hint zone) and take a look at it's zone file, usually named root.cache or root.hints.

Are you using DHCP for your network from the router? If so, it will normally pass the DNS server information that it has been given from your ISP. Your Linux box will then use that information as it's DNS will not return a value.

Regards

Thanks Squirrel, that exactly what I wanted to know.