Is it possible to change an interface MAC address??

[Allen_Fambro]

Hello,

  Is it possible to change the physical MAC address of an interface on the gateway (Gaia R80.30 3200 appliance)??  Troubleshooting a DHCP assigned IP address for the interface and want to change the MAC to prove the issue is on the DHCP server.  I know I could just use a different interface as well but that only changes the last digit in the MAC.  I'd like to use a totally different MAC.

  I tried changing it below but it doesn't seem to stick.  Any assistance would be greatly appreciated.  Thanks.

[G_W_Albrecht]

Please consult Gaia Administration Guide R80.20 p.62:

On the Ethernet tab: 

• Select Auto Negotiation, or select a link speed and duplex setting from the list. 

• In the Hardware Address field, enter the Hardware MAC address (if not automatically received from the NIC). 

Caution: Do not manually change the MAC address unless you are sure that it is incorrect or has changed. An incorrect MAC address can lead to a communication failure. 

[Allen_Fambro]

I figured it out.  You cant seem to use the GUI however I was able to "spoof" the MAC using ifconfig via the command line.  Not sure if this would have survived a reboot though as I was only doing it for troubleshooting purposes...

1 - ifconfig eth1 down
2 - ifconfig eth1 hw ether 94:9A:A9:84:75:45
3 - ifconfig eth1 up

Just for clarification, this should only be done for troubleshooting requirements.  This should not be standard practice, etc...

Thanks.

[PhoneBoy]

Definitely anything done via ifconfig won't survive a reboot and/or msy be overridden if you make any configuration changes in clish/WebUI.