Date: Wed, 24 May 2006 12:17:37 GMT From: Gleb Smirnoff <glebius@FreeBSD.org> To: eddy@ncv.ru, glebius@FreeBSD.org, freebsd-bugs@FreeBSD.org Subject: Re: misc/97339: ppp is giving same ip-addresses for 2 or more ppp-clients Message-ID: <200605241217.k4OCHbR3044707@freefall.freebsd.org>
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Synopsis: ppp is giving same ip-addresses for 2 or more ppp-clients State-Changed-From-To: open->closed State-Changed-By: glebius State-Changed-When: Wed May 24 12:17:27 UTC 2006 State-Changed-Why: Actually the PPP software or RADIUS should take care about colliding client IP addresses. Historically PPP software didn't do this relying on the fact that kernel will refuse such configuration. Meanwhile this configuration is valid and in some cases it is useful, and thus since FreeBSD 5.4-RELEASE kernel doesn't refuse same IP addresses on different interfaces. To assist software that relies on the old behavior a helper sysctl is available - net.inet.ip.same_prefix_carp_only. To get the old behavior you need to add the following line to your /etc/sysctl.conf: net.inet.ip.same_prefix_carp_only=1 http://www.freebsd.org/cgi/query-pr.cgi?pr=97339
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