Currently VyOS 2026.03 offers these offloading options:
vyos@vyos# set interfaces ethernet eth0 offload Possible completions: gro Enable Generic Receive Offload gso Enable Generic Segmentation Offload hw-tc-offload Enable Hardware Flow Offload lro Enable Large Receive Offload rfs Enable Receive Flow Steering rps Enable Receive Packet Steering sg Enable Scatter-Gather tso Enable TCP Segmentation Offloading
Request to add UDP Segmentation Offloading (uso) to the list of available offloading options.
Available through ethtool as tx-udp-segmentation:
root@vyos:/home/vyos# ethtool -k eth0 | grep -i tx-udp-segmentation tx-udp-segmentation: off