[SOLVED] Management interface mdis_host?

[Leon Roy]

Just setting up Proxmox and in the network setup I see three interfaces (see image below).

1. mdis_host
2. eno1
3. eno2

eno1, eno2 are my onboard Intel network ports, what's mdis_host?

There is an IPMI interface on this machine but it shouldn't visible to Proxmox as a NIC and moreover the MAC address it shows doesn't match the IPMI MAC - so I'm at a loss as to what it is, anyone know?

 

[Lukas Moravek]

Hello,

Based on the screenshot seems to be rndis_host (not mdis_host, the font may confuse). Which based on HW manufacturer, is dedicated interface (USB / Virtual ethernet) and can provide special functionalities, like firmware update.
https://en.wikipedia.org/wiki/RNDIS#:~:text=The Remote Network Driver Interface,Linux, and FreeBSD operating systems.

https://www.thomas-krenn.com/en/wiki/Virtual_network_interface_enx_of_Supermicro_Motherboards

What is you HW Setup?

Hope it helped.

Lukas

 

[Leon Roy]

Many thanks Lukas - it is indeed as your say `rdis_host`.

Proxmox by default selected it as the management host - I had a feeling it wouldn't work since it's not listed as a MAC address on any of the visible interfaces on the machine. Indeed it didn't work after booting up so a modification to the `interfaces` file to use `eno1` instead solved the issue.

Hardware setup is a Supermicro mainboard H13SAE-MF with an AMD Epyc 4364P. Machine has two NVMe SSDs, one for the OS and one for VMs. Each are setup as ZFS pools.

A little more info on RDIS and what Supermicro use it for:
https://www.supermicro.com/support/faqs/faq.cfm?faq=35162

Seems Linux is trying to remove it for v6.9 and causing upset due to it being used by Android internally for data tethering with a PC.