Diff returns the first difference between the specified netlink messages and the expected netlink message payloads.

MatchRulesetBytes is a test helper that ensures the fillRuleset modifications correspond to the provided want netlink message payloads.

NewRecorder returns a ready-to-use Recorder.

OpenSystemConn returns a netlink connection that tests against the running kernel in a separate network namespace.

Recorder provides an nftables connection that does not send to the Linux kernel but instead records netlink messages into the recorder.