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Date:   Mon, 11 May 2020 14:10:53 +0200
From:   Pablo Neira Ayuso <>
To:     Maciej Żenczykowski <>
Cc:     Maciej Żenczykowski <>,
        Florian Westphal <>,
        Linux Network Development Mailing List 
        Netfilter Development Mailing List 
Subject: Re: [PATCH] iptables: flush stdout after every verbose log.

On Tue, Apr 21, 2020 at 01:15:42AM -0700, Maciej Żenczykowski wrote:
> From: Maciej Żenczykowski <>
> Ensures that each logged line is flushed to stdout after it's
> written, and not held in any buffer.
> Places to modify found via:
>   git grep -C5 'fputs[(]buffer, stdout[)];'
> On Android iptables-restore -v is run as netd daemon's child process
> and fed actions via pipe.  '#PING' is used to verify the child
> is still responsive, and thus needs to be unbuffered.
> Luckily if you're running iptables-restore in verbose mode you
> probably either don't care about performance or - like Android
> - actually need this.

Applied, thanks for explaning.

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