> In Ubicloud’s case, enabling flowtables just took seven lines of code!

Could have been six lines by combining these two lines:

    ip protocol tcp counter flow offload @ubi_flowtable
    ip protocol udp counter flow offload @ubi_flowtable

into:

    meta l4proto { tcp, udp } flow offload @ubi_flowtable

Also, their changes only work for IPv4. The above would work for both IPv4 and IPv6.