Date: Fri, 28 Aug 2009 10:24:44 -0700 From: "Li, Qing" <qing.li@bluecoat.com> To: =?iso-8859-1?Q?Michael_T=FCxen?= <Michael.Tuexen@lurchi.franken.de> Cc: qingli@freebsd.org, "Bjoern A. Zeeb" <bz@freebsd.org>, Randall Stewart <rrs@lakerest.net>, net@freebsd.org Subject: RE: routing message problem Message-ID: <B583FBF374231F4A89607B4D08578A4305277931@bcs-mail03.internal.cacheflow.com> In-Reply-To: <BFC746D7-9E88-43AD-8320-96928633C532@lurchi.franken.de> References: <BFC746D7-9E88-43AD-8320-96928633C532@lurchi.franken.de>
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>=20 > Dear all, >=20 > via a bug report from Preethi I figured out that there are no > RTM_NEWADDR > routing messages generated when an IP address is added to an interface > and there is already an address in the same network configured. > This is a problem for the SCTP stack. >=20 > To reproduce the problem you can > sudo ifconfig em0 192.168.1.1 > sudo ifconfig em0 192.168.1.2 alias >=20 > and use the attached problem. It will only show the first address > being added. This problem applies to FreeBSD 9.0 CURRENT and 7.2 > RELEASE. >=20 > Any idea how to fix the problem? >=20 Please try my patch (not the final version) at=20 http://people.freebsd.org/~qingli/patch-8-28-rtmsg.diff I have tested it and seems to work as expected. You should get the notifications for both address insertion ("alias") and deletion ("-alias"). Let me know if it's to your satisfaction. I found a couple of other issues while looking over the code. 1. in_scrubprefix() is called unnecessarily in 2 locations 2. the loopback host route is not removed for an alias On a related note, in.c can use some code cleanup. I think I will do that post 8.0 release. Thanks, -- Qing
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