Trying to provision flowtable returns error

[Martin Gignac <martin.gignac@xxxxxxxxx>]

Hi,

I want to try out flowtables and I am trying to create a new flow
table (based on
https://www.kernel.org/doc/Documentation/networking/nf_flowtable.txt)
by inserting the below statement in my 'firewall.nft' file:

----------
table inet filter {

  flowtable f {
    hook ingress priority 0; devices = { br0, br1 };
  }

  chain input {
    type filter hook input priority 0; policy drop;

[remainder removed]
----------

When I run 'nft -c -f firewall.nft' it returns the following error:

----------
/etc/firewall.nft:10:13-13: Error: Could not process rule: No such
file or directory
  flowtable f {
----------

I haven't been able to figure out what's wrong about my syntax so far.

Any hints?

Thanks,
-Martin