Can't see MAC address on LAN

Issuing the arp -a command in terminal (Mac OS) shows all MAC addresses connected to my LAN. However the network extender MAC address doesn't show. Any idea why not?

it jsut started working...

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Dear Forum Members,
I have recently bought a notebook, Lenovo IdeaPad G550L (I haven't found section for the G series here on the forum) and would like to use its WiFi adapter (BCM4310 according to Everest) with explicitly changed MAC address. I installed the recommended driver, available from Lenovo's website, version 5.10.38.14. I tried the common way to change the MAC address, went to Control Panel -> Network Interfaces -> Broadcom Wireless Network Adapter -> Configure... -> Advanced -> Locally administered MAC address, and changed it to a different address (without ":" or any separator characters). Unfortunately this common solution won't work at all. Although, no error messages are produced when changing it (so it seems successful) my wireless router shows me the original MAC address of my integrated wifi card. Tried to restart my computer, my router, everything.
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* Tried to look for official Broadcom drivers on www.broadcom.com but found nothing for BCM4310.
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"As the chipset supplier, Broadcom provides driver support to our customers - the manufacturers of wireless devices - that ultimately provide products to end customers, such as wireless LAN vendors, cable modem vendors, and notebook providers. It is up to these manufacturers to provide product-specific drivers and software support to their end customers. Please contact the manufacturer of your wireless device for their current drivers"
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"Dear ******,
Thank you for contacting Lenovo, the makers of ThinkPad and ThinkCentre products. As I understand, you have purchased a Lenovo IdeaPad G550L and would like to use its WiFi adapter (BCM4310 according to Everest) with explicitly change MAC address.and you would like to know is there an official driver for Windows XP that allows you this basic feature like b43 in Linux. We apologize,Please do speak with our Idea pad technical Team at 877-453-6686 Option 1-2-1-2 for further assistance.
If you have further questions or concerns, please feel free to contact us at 866-42-THINK (84465) option number 2. We will be happy to assist at that time.
Once again, thank you for contacting Lenovo.
Sincerely,
Lenovo Websales/CustServe"
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Yes, I have posted this thread to different forums after I realized that Lenovo "customer care" is not likely to help me out and even wirelessforums.org members couldn't come up with any ideas for days, that's why. I have already written that helper applications like SMAC (or etherchange or macshift) don't work, because they do the same thing in the system as I change it in the driver panel, so they use the same method which simply does not work.
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I upgraded from 10.4 to 10.5. Under 10.4, I had always routinely synced data using Windows XP Briefcase. Well, when I upgraded to 10.5, PC & Mac would not see each other anymore, bidirectionally, neither one could see the other. These are connected over AirPort only.
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We did a bunch of stuff in System Preferences:
Network/[protocol/Advanced/WINS -- made sure the workgroup had the right name
Sharing/[user]/ -- turned on file sharing and made sure SMB was selected in the submenu
Sharing/ -- changed the "Computer Name"
Trashed a bunch of plists under [drive]/Library/Preferences/SystemConfiguration
network.identification
NetworkInterfaces
preferences
None of that fixed it, but may have been part of the solution. Apple told me I was on my own, and EVEN SUGGESTED I CONTACT MICROSOFT?
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Last post in this thread gave me the idea:
http://discussions.apple.com/thread.jspa?messageID=8939984&#8939984
Go to Airport utility.
Change meaningless setting: Changed DHCP lease from 4 hours to 4 days
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Map network drive from PC to Mac.
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Good luck to all of you suffering through the Leopard "upgrade."

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Reset the Express back to Factory Default Settings and confgure the Express using wireless only.
Resetting an AirPort Base Station or Time Capsule FAQ
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Hi,
I also have the same problem.
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Can't see MAC address on LAN

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