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Date:      Fri, 01 Dec 2023 14:37:12 +0000
From:      bugzilla-noreply@freebsd.org
To:        ipfw@FreeBSD.org
Subject:   [Bug 275470] Kernel Panic in IPFW when adding entries to table
Message-ID:  <bug-275470-8303-xBbu9IIIaS@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-275470-8303@https.bugs.freebsd.org/bugzilla/>
References:  <bug-275470-8303@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D275470

Eugene Perevyazko <john@dnepro.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |john@dnepro.net

--- Comment #1 from Eugene Perevyazko <john@dnepro.net> ---
Skipping the problem of kernel panic itself I'd like to propose a workaround
for your script:

TMPFILE=3D`mktemp -t tbl53` || exit 1
awk '/^[0-9]/ && !/127.0.0/ {print "table 53 add "$1}'
/tmp/dnsbl/dnsbl-1.uceprotect.net > $TMPFILE
ipfw -q $TMPFILE
rm $TMPFILE

It also should be much faster and lighter on CPU.
for example it takes less than a second of wall time on ancient core2:
# ipfw table 53 flush
# ipfw table 53 list | wc
       0       0       0
# time ipfw -q /tmp/tbl53.0kfeoXCu=20
0.179u 0.242s 0:00.42 97.6%     158+184k 0+0io 0pf+0w
# ipfw table 53 list | wc
   65698  131396 1278284

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