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This question relates to a system running Fedora 15, 64-bit.
A have a small network, with a couple of Windows machines, and a Fedora box, all going through a hub and Netgear router. I have a fixed public IP address.
A couple of weeks back, after using the same IP for years, I had to change it, along with the DNS IP, etc. The Windows machines still work okay.
However, I realized today that several scripts on the Linux box, which retrieve data from external sources had failed to do so since the date I switched the IP address. The scripts use both FTP and HTTP to retrieve stuff.
Anyway, debugging the scripts and trying to find out what is wrong, I realized that the machine is not recognizing any host names, and hence it never fetches anything with the scripts. Similarly with traceroute, etc.
However, I can ping remote addresses, and traceroute using the relevant IP addresses. No doubt I could also use FTP and HTTP in this way too if I had to, and I can FTP and SSH onto the machine with its local IP address.
Nonetheless, I am scratching my head about why DNS doesn't seem to be working on the machine after I switched the public IP on the router. I didn't think I would need to do anything on the Linux box for it to just continue working as it always had done.
Any assistance in resolving this, or pointing me in the right direction would be much appreciated.
Last edited by cheddarcheese; 10-11-2012 at 05:23 PM.
I needed to change the IP in /etc/resolv.conf, which I wasn't aware of.
It says that the entry was generated by the Network Manager, so I'm not sure if the entry I made will remain so, as I think I've read other people having issues with Network Manager incorrectly overwriting /etc/resolv.conf.
Still, it's working for now, and thank you very much!