How to enable Jumbo frames on Mac Mini M1?

[al404]

I did go into ethernet -> advance -> hardware and set the configuration to manual
After I changed MTU to 9000 ( it is available in the drop down )
After I clicked ok and the Mac mini seemed to disconnect and reconnect but MTU was reset to 1500

I'm on latest Ventura

 

[al404]

this seems to fix it

sudo ifconfig en0 mtu 9000

 

[southerndoc]

Is this an issue with macOS Ventura? I'm not able to do this in Ventura on my Mac Studio. Every time I set it to 9000, it resets to 1500.

 

[southerndoc]

Never mind... just figured it out. Set it to custom and then type 9000. It then set it to jumbo frames (9000) as if I had selected that in the drop down menu.

Now getting 9.86G:

[SUM] 0.00-20.00 sec 23.0 GBytes 9.86 Gbits/sec 40866 sender [SUM] 0.00-20.00 sec 23.0 GBytes 9.86 Gbits/sec receiver

 

[srgz]

I can't go above 2,034 MTU with the IXGBE driver for some reason?

EDIT: With OWC (or Sonnet) Aquantia 10GbE, everything runs at 9.6 Gbits. So it's this Promise (Intel) thing that is problematic.

Jumbo frames works on both of those too, I can't even set 9000 mtu using ifconfig on macOS with the Promise -- it gives me an ioctl error...