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In file included from ruleset.conf:8:1-72:
/nix/store/jx20wj41scidy9yhg1bnmm5zlrxwacam-_nftables.ruleset:6:3-49: Error: File not found: /etc/nixos/nftables/private_nets.set
  include "/etc/nixos/nftables/private_nets.set"
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^