We recently got bitten by issues with the i40e intel driver for 10g nic’s in a bonded (802.3ad) configuration. The solution was to disable TSO, GRO and GSO for each nic, MAAS however DOES NOT SUPPORT these parameters in the interface configuration.
It is supported in /etc/network/interfaces with the “offload- on/off” params.
i.e. for our case it is:
offload-tso off
offload-gro off
offload-gso off
inside of each interface block that needs it.
For systemd (untested by me yet) this seems doable via https://askubuntu.com/questions/1119164/how-to-permanently-disable-tso-gso-in-ubuntu-18-04
https://www.freedesktop.org/software/systemd/man/systemd.link.html
Match criteria gives a lot of flexibility but intuitively using mac address feels like a good one to use.
Please add the ability to set these params for interfaces into the MAAS API (And gui)