Date: Tue, 15 Oct 1996 13:33:23 -0700 From: David Greenman <dg@root.com> To: Julian Elischer <julian@whistle.com> Cc: Brian Candler <B.Candler@pobox.com>, bugs@FreeBSD.org, nato-ws@ripe.net, t12@psg.com Subject: Re: IP bugs in FreeBSD 2.1.5 Message-ID: <199610152033.NAA03243@root.com> In-Reply-To: Your message of "Tue, 15 Oct 1996 12:54:36 PDT." <3263EBFC.1CFBAE39@whistle.com>
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>> 1. On several occasions we found that although a default route appeared to >> be in the kernel forwarding table (as shown by netstat -nr), it did >> not work. However simply by deleting and reinserting the exact same >> default route, it then worked fine. I'm afraid I can't give you >> a set of circumstances which can cause this problem to be >> reproduced. >> >possibly another route preceeded it in some way >I can imagine such a case but can't quite put my finger on a >mechanism. He likely had a clone route. This would only show up with netstat -rna. It would also be deleted automatically if he deleted the default route. This isn't a bug, but it is useful to understand how this all works so that you can be prepared for the behavior. >> 5. On one occasion the kernel forwarding table had a bad entry (I >> think a "link #1" type entry) which could not be removed, apart from >> by rebooting the machine. >> > >sorry, no idea That would be an arp entry. He probably had an outstanding arp request that wasn't satisfied. -DG David Greenman Core-team/Principal Architect, The FreeBSD Project
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