New MAC on every reboot

[Jaster]

It seems my server generates a new MAC for the building NIC whenever I reboot. This makes it basicly impossible to assign a static address to it.

Why is this happening and can I prevent this?

[Frank1940]

How many NIC's does the MB/card have?  Also see this thread:

 

     https://forums.unraid.net/topic/94606-more-than-50-of-the-time-my-server-boots-up-without-network-how-do-i-debug-this

 

[Jaster]

The board has two mics, but I get an new Mac every time I reboot

It's an Asus x299 mark1.

[Frank1940]

Did you read this post (and the succeeding ones) in the thread?

 

    https://forums.unraid.net/topic/94606-more-than-50-of-the-time-my-server-boots-up-without-network-how-do-i-debug-this/?tab=comments#comment-874485

 

[Vr2Io]

19 minutes ago, Frank1940 said:

Did you read this post (and the succeeding ones) in the thread?

 

    https://forums.unraid.net/topic/94606-more-than-50-of-the-time-my-server-boots-up-without-network-how-do-i-debug-this/?tab=comments#comment-874485

 

Not sure that post OP problem solve or not.

 

But this is first time I see a mainboard (Asus x299 mark1) which menu state will inter connect both NIC in design.

[Jaster]

It's not a 50/50 thing for me, both nics do get a new Mac. Not a random random of two, but just a new Mac on every reboot. Also, I don't run them aggregated (yet).

I would expect a stable Mac and I'm certain it used to be stable.

[Vr2Io]

Could you try if disable one of NIC in BIOS with stop random MAC behaviour.

Edited July 15, 2020 by Benson