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089da1c14d
The fix for #62874 introduced a race condition on startup: the postStart commands that configure the firewall run concurrently with sshguard's creation of the ipsets that the rules depend on. Unfortunately iptables fails hard when referencing an ipset that doesn't exist, so this causes non-deterministic crashlooping until sshguard wins the race. This change fixes that race condition by always creating the ipset and reconfiguring the firewall before starting sshguard, so that the order of operations is always deterministic. This change also cleans up the ipsets on sshguard shutdown, so that removing sshguard from a running system doesn't leave state behind. Fixes #65985. |
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