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https://bro-tracker.atlassian.net/browse/BIT-1407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=20904#comment-20904
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Vern Paxson commented on BIT-1407:
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Also, regarding the policy script adding the -f flag: how would the user
discover that that's what they need to do (have the policy script loaded) to
get the flag? I can see quite a bit of perplexment if Bro just tells the user
that the flag doesn't exist without explaining why, if they don't have the
script loaded.
> -f silently fails if base/frameworks/packet-filter isn't loaded
> ---------------------------------------------------------------
>
> Key: BIT-1407
> URL: https://bro-tracker.atlassian.net/browse/BIT-1407
> Project: Bro Issue Tracker
> Issue Type: Problem
> Components: Bro
> Reporter: Vern Paxson
> Attachments: signature.asc
>
>
> I know we've been through this before (though searching the tickets in Jira,
> I couldn't find the thread). But to revisit: the "-f filter" option silently
> does nothing if base/frameworks/packet-filter isn't loaded (so the scenario
> here is using -b to suppress its automatic loading). This can lead to
> seriously confusing behavior. It would be preferable if there's either an
> error message indicating that the option won't be supported, or if it forced
> loading of packet-filter.
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