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nixos/nat: substitute iptables for compat under nftables #85462

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@bqv bqv commented Apr 17, 2020

(Migrated from #84949 due to a wonderful demonstration of PEBKAC)

Motivation for this change

Currently, NAT will not work if you have nftables enabled (and therefore default firewall disabled (and therefore ip_tables unloaded/blacklisted)). This allows those using nftables to enable nat and have it work with minimal code change, thanks to the good work of those who created iptables-nftables-compat.

Debugging why my containers had no network access was a pain, this change fixed my issue, I'm using it right now.

Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits CONTRIBUTING.md.

nixos/modules/services/networking/nat.nix Outdated Show resolved Hide resolved
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This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/prs-already-reviewed/2617/145

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bqv commented May 19, 2020

closing not because it's solved, but because no activity and I don't really care enough to keep pushing.

@bqv bqv closed this May 19, 2020
bqv added a commit to bqv/rc that referenced this pull request Jan 23, 2021
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3 participants