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I'm pretty much a Linux newbie; I've got 30 years of software development, but have somehow avoided unixland. I've done some limited unix/linux stuff but not much configuration, and pretty much every little task requires opening a book.
I'm setting up a RedHat Enterprise Linux machine that will be a prototype server for a project. Right now I'm just trying to get it to be able to get out to the Internet and basically surf the web. There are other issues, but until I can download files, I can't address them.
The machine sits on a LAN watched over by an NT server. The LAN has a modem router (NetGear RP614) that does the gateway stuff et al.
From the Linux machine I can ping the router just fine, and I can ping an outside IP address, but I don't get any name resolution. I haven't figured out where to declare the DNS server addresses. So, I can ping 220.127.116.11 (for Yahoo) but I can't ask for yahoo.com directly. Therefore I'm assuming it's a DNS configuration issue.
I look up DNS in troubleshooting and this and other forums, but the first 10,000 articles always seem to be about how to make the machine a DNS server, which I'm not interested in. I just want to tell it "the gateway is here, and go there for your DNS". The gateway I think I did correctly, but how do I tell it what IP addresses I want it to use for DNS?
here's what was happening - when i edited /etc/resolv.conf to take out 192.168.0.1 as a nameserver i restarted my eth0 interface as i said in a couple postings (i thought that had to be done for the changes to take effect) however, when i did that SUSE queried for a new nameserver and IP address from the router so i lost my changes. I discovered that by looking at those tcpdump logs.
Ahh, then yes. Most likely under dhcp you will be querying for nameserver(s) and your resolv.conf will get overwritten. It's been a while sorry. I always pretty much set the ip's statically. But yes, dhcp will cause this.