Ethernet not showing up in Network Preference.

The ethernet does not show up in my Network Preference panel.
When I plug in an ethernet cable I get a kernel panic. HELP
PowerBook G4 Mac OS X (10.4.5)

When I plug in an ethernet cable I get a kernel panic. HELP
What device is the other end of the cable connected to at the time this happens?

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Thunderbolt ethernet not showing up in network preferences

this is happening with both my thunderbolt display and thunderbolt<->ethernet adaptor....
the ether net in the t-bolt display WAS working.... but was having probs with the ethernet adaptor while on the road, so I tried deleting the thunderbolt ethernet entry from the Network Preferences panel. Well, now when I hook up my thunderbolt Display, the option doesn't re-appear! So now I'm thinking there's something in the system that's keeping that from re-appearing in the network preference panel, and it could be the reason for both items not working.
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Apple 57761-B0:
Name:          ethernet
Type:          Ethernet Controller
Bus:          PCI
Slot:          Thunderbolt Slot 2@11,0,0
Vendor ID:          0x14e4
Device ID:          0x16b0
Subsystem Vendor ID:          0x106b
Subsystem ID:          0x00f1
Revision ID:          0x0010
Link Width:          x1
BSD name:          en2
Kext name:          AppleBCM5701Ethernet.kext
Firmware version:          57761-a1.48, 0x2fe676f9
Location:          /System/Library/Extensions/IONetworkingFamily.kext/Contents/PlugIns/AppleB CM5701Ethernet.kext
mDNS offload capable:          c8:2a:14:4f:a3:90
Version:          3.2.4b8
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Digging around a little in the system, I see this:
cd /System/Library/Extensions/IONetworkingFamily.kext/Contents/PlugIns/
$ ls
AppleBCM5701Ethernet.kext          AppleYukon2.kext
AppleIntel8254XEthernet.kext          IOEthernetAVBController.kext
AppleUSBEthernet.kext                    Intel82574L.kext
AppleUSBGigEthernet.kext          nvenet.kext
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I also tried disconnecting the display and adding it back and rebooting - nothing worked.
But here's a bizarre twist: I show "Bluetooth PAN" connected and active, and it's coming from the Thunderbolt display! I can get online. Then I disconnect the network cable from the display, and test again - no network. So somehow, the driver for Bluetooth PAN is totally confused with the display Ethernet. In fact, the Bluetooth PAN shows connected, and "No PAN devices found". So I'm connected to a phantom device.
Maybe deleting the PAN and display, adding back the display, will get it to recognize it properly.
The short of it is I have Ethernet connected now through the display, but using the Bluetooth PAN device driver.

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Any relationship to what works and what doesn't?
no
Could there be a bad cable or bad switch port?
I've thought about that - checked and rechecked
Do you know how to see if there are two momputers with the same ip connected to a network?
Tried swapping a working and a non-working box to see if it's the connection that's stuffed?
no
but I just did
I tested an imac using the same connection. It was able to browse the entire network.
I noticed that MacBookPro had tld-internal.com in the Search Domains entry box.
I entered TLDMacserver.com as the search domain and was able to browse the server share points and read and write. (hoorah!)
I think that this is where the problem is - Is there a domain that needs to be set up or is already setup? I don't know of a setting on pc's to Search Domains - is this just a mac thing?
Now, seeing the other computers is the issue. I can only browse 4 macs and the Xserver on a mac but nothing on the pc's.
Is there something in the Advanced TCP/IP Settings that I should know about?
My server name on the left panel in Server Admin is TLDMacserver-com.local.
Under Settings/Network the computer name is TLDMacserver-com
Computer Name - TLDMacserver.com
Local Hostname TELDMacserver-com
Network Interfaces: Ethernet 1
IPv4
192.168.0.32
DNS Name: TLDMacserver-com.local
Anything interesting in the SMB-related server log files on the Mac OS X Server box?I'm not really sure what to look for.
That's one of those cases where digging through the logs looks for oddities.
I would probably have as much luck digging for gold.
Also, probably related to my problem - my logmein.com remote conrol no longer works. I tried deleting the machine from my list and reinstalling Logmein on the server, but it won't install.
It says:
Istaller is damged
Installer is unable to open the package.
This is likely due to install framework's runner executable not having he proper ownersip &/or persmissions.
Definitely seems that something got stomped on. Mayhap the disk?
What's the state of your data archives?
for those machines that can browse it's working fine.
Your backups current?
yes. A firewire drive that's swapped out. They both are backing up right.
Next step would be to boot the installer DVD and verify the disk and verify the disk protections.
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built-in ethernet is currently active and has the ip address
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I used to see these drives and made aliases for them, but they do not show up now.
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Yesterday I noticed that the Network icon in the G5 sidebar had an eject symbol next to it. That seems strange, upon reflection, as if something was not right.
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Ethernet not showing up in Network Preference.

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