Greetings! I hope someone can help!

I have a G4 MDD 1.25 GHz DP running 10.5.8. Earlier tonight, it stopped 
connecting to the internet for no reason I could discern. I had used it on 
the internet (both with Safari and Firefox) with no issues all day. The 
machine is connected via ethernet, through a switch to a wired/wireless 
router. I had put it to sleep, and reawakened it maybe 15-20 minutes later, 
and when I did so, found that it would not load web pages, etc. Safari 
reported "you are not connected to the internet". The "network" panel under 
System Preferences reported that the machine was connected to ethernet, but 
had a "self-assigned" IP address. Network Diagnostics told me I was not 
connected to the internet, and that it could not repair the connection. I 
tried restarting the machine, but no joy. I tried re-booting both the 
switch and the router, with no joy there either. 

The thing is, that 2 other machines (a B&W G3, a windows desktop) are 
networked via the same switch to the same router, and a windows laptop 
wirelessly to the same router, and throughout all of this they have had no 
issues connecting to the internet. I tried swapping out ethernet cables, 
and connecting to different ports of the switch, but the results were the 
same - other machines connect to the internet fine, the MDD will not.

Thinking that something may have been corrupted, I tried re-starting the 
MDD with a firewire drive containing a clone I had made yesterday (when 
there were no issues) of the startup drive. Same result as before - no 
internet connection. 

I have noticed since then, that, when I restart the machine, for the first 
3-5 minutes the System Preferences "network" panel will report a 
"self-assigned" IP address. Then, after a few minutes, it will report a 
"real" IP address and the address of the router. Furthermore, the B&W G3 
will show up under the "Shared" heading on the left hand side of an open 
hard drive window. But if I open a web browser, it spins forever and 
reports (Firefox) that it could not find the server, or (Safari) that I am 
not connected to the intenet. 

It seems clear to me that the problem is not the router or switch, because 
other machines connected to the same router and/or switch have no problem 
connecting to the internet. Furthermore, it doesn't seem to be an 
electronic problem in the MDD, because it does report that it is connected 
to the ethernet, and eventually gets a valid IP address, and it "sees" the 
other mac on the network. 

So, any ideas about what is wrong with it, and what I can do to fix it? 

I will be very grateful for your wisdom and suggestions!

Thanks, 

Fr. Rob Johansen

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