Hello There,
We have a similar issue with our corporate deployment of MAC based authentication system and DisplayLink network cards on Toshiba Dynadock model.
We've been trying to follow instructions from this support KB to pass-through laptop's MAC to dhcp but the settings do not stick, it reverts back to displaylink MAC when we move to different Dock.
Laptop's LAN and Wireless MAC addresses are registered but Dock's not. we need to get it to ALWAYS pass-through laptops mac no matter which Dynadock dock its connected to.
Here are some details from testing we carried out using one laptop on 4 docks.
Laptop A - Dock A ,
Tried changing MAC address through GUI under network card, this works. DHCP server sees lease against LAN card's MAC.
Dock B
- Changed the docking station , Laptop changed the network card from #2 to #3 and wiped MAC override settings.
- The settings under reg key HKEY_LOCAL_MACHINE\System\CurrentControlSet\servic es\dlcdcncm\Parameters\* are still the same but they do not show Laptops MAC when tested under the network card > advance > mac or ipconfig /all
- Under reg key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{4D36E972-E325-11CE-BFC1-08002bE10318} it now has new numeric key 0017
- We changed the settings through GUI under NIC and it works.
- Moved laptop back to Dock A and it still remembers settings but under 0016 driver key.
Dock C
- Changed the docking station to Dock C, it now has another driver key 0018 and no MAC override under NIC card anymore.
- Updated to Displaylink driver 8.3 from 31st Aug and rebooted.
- Changed NIC settings once more under NIC > advance tab , moved back to Dock B and it remembers settings Albeit under 0017 driver key.
Dock D,
Changed the dock again, settings gone away again. Driver key showing 0014
We tried to find DisplayLink support / customer service number but no joy so posting here on Forum. Quick reply will be much appreciated.