Date: Tue, 11 Apr 1995 12:59:19 -0400 From: Garrett Wollman <wollman@halloran-eldar.lcs.mit.edu> To: pritc003@maroon.tc.umn.edu Cc: freebsd-bugs@freefall.cdrom.com Subject: kern/332: Incorrect routes can cause system to reset Message-ID: <9504111659.AA05366@halloran-eldar.lcs.mit.edu> In-Reply-To: <199504110950.CAA17668@freefall.cdrom.com> References: <199504110946.EAA00290@mpp.com> <199504110950.CAA17668@freefall.cdrom.com>
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<<On Tue, 11 Apr 1995 02:50:00 -0700, pritc003@maroon.tc.umn.edu said: > Destination Gateway Flags Refs Use Netif Expire > default 128.101.118.21 UGSc 0 0 sl0 > 127.0.0.1 127.0.0.1 UH 0 0 lo0 > 172.16.0.1 127.0.0.1 UH 0 0 lo0 > 224 172.16.0.1 US 0 0 sl0 > # ping freebsd.org > [machine resets here] Your problem here is very simple: you have specified a gateway (128.101.118.21) for which there is no route. When something attempts to use the default route, it must first find a route for the gateway. The only route that matches is the default route! This results in bottomless mutual recursion. The answer is to NEVER perform this step: > route delete 128.101.118.21 172.16.0.1 I am also working on code which should be able to detect this situation and avoid the problem entirely. -GAWollman -- Garrett A. Wollman | Shashish is simple, it's discreet, it's brief. ... wollman@lcs.mit.edu | Shashish is the bonding of hearts in spite of distance. Opinions not those of| It is a bond more powerful than absence. We like people MIT, LCS, ANA, or NSA| who like Shashish. - Claude McKenzie + Florent Vollant
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