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http://www.daemonnews.org/200007/newbus-intro.html
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http://www.bgnett.no/~peter/pf
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http://campus.ecp.fr/~petrus/linux_chillispot_openwrt.php
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http://www.taosecurity.com/keeping_freebsd_up-to-date.html
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http://www.squarefree.com/pornzilla
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http://leaf.dragonflybsd.org/mailarchive/commits/2004-09/msg00072.html
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http://irate.sourceforge.net
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http://info.iet.unipi.it/~luigi/polling