Mac Pro no longer connects to network via ethernet.

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Since coming back from Thanksgiving break and my Mac Pro 1,1 will no longer connect to my router through via ethernet. This means I can neither connect to internet nor connect to devices like my laptop and Apple TV. Strangely, I can still connect to my Mac Pro from these devices to share screen, play audio/video through iTunes, etc. In Network Settings, I still have a green dot, and I still get an IP address assigned (though I usually use a fixed IP). If I go into my router (Netgear WNDR4000), the router tells me that the Mac Pro 1,1 is connected to the network.

I already have tried the following solutions:
· Restarting router, modem, and computer
· Making a new location in Network Settings
· Trying different ethernet ports

Please Help!
 
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Silver M1 iMac 512/16/8/8 macOS 11.6
G'day and welcome to the forums.

Sounds like the router has failed. Try setting it up again using the router address and see if that brings any joy. Have found as a rule of thumb three years is a good run out of a router,
 
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Hey, thanks for the welcome and the quick reply!

If my router failed, why can I access my computer via my LAN network from other devices, but not vice versa? I was always under the impression that if your ethernet port burns out or your router fails your device should be cut off entirely from the rest of the network...
 
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Bizarrely, after a couple days of refusing to connect to the network, the computer connected just fine this morning.

I'd still be interested to know what's going on here...
 
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Have you tried another Ethernet cord ( cable ) ... maybe one of the RJ45 connectors is damaged or one of the twisted pairs inside the cable came loose.

Cheers ... McBie
 
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After above suggest taking nit up with your ISP, but the problem is never their end.
 

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