Date: Wed, 17 Nov 2004 19:50:32 +0300 From: Vladimir Grebenschikov <vova@fbsd.ru> To: Max Laier <max@love2party.net> Cc: freebsd-arch@freebsd.org Subject: Re: in.c autoadding prefix route Message-ID: <1100710232.47346.5.camel@localhost> In-Reply-To: <200411112124.12616.max@love2party.net> References: <200411112124.12616.max@love2party.net>
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В чт, 11/11/2004 в 21:24 +0100, Max Laier пишет: > All, > > I know I have sent this a couple of times before, but never got anywhere. This > time I am set to commit! > > The attached patch (http://people.freebsd.org/~mlaier/in.c.patch) derived from > WIDE via OpenBSD in.c, rev 1.21 improves the handling of automatic prefix > routes. > > Right now you can't have two legs into the same network. If you want to, you > must give on of the interfaces a host address only (netmask /32). This way it > is not possible to hand over the route if one of the interfaces is > "removed" (however this is done in the special case). > > The patch allows to add more than on IPv4 address with the same prefix. In the > case that there is a route already, we leave it alone and add the new address > without the IFA_ROUTE flag. When we remove an address later on, that has a > route associated, we try to find an alternative address to use for the route > and hand it over. > > This is required for CARP, but should be helpful for other situations as well. > > Any objections? This change actually broke one simple thing: # ifconfig lo0 alias 10.0.16.111/32 # ping 10.0.16.111 PING 10.0.16.111 (10.0.16.111): 56 data bytes ping: sendto: No route to host ^C # You should (anyway should) add routing of interface address itself to loop-back interface, like it usually done in all other cases. Please fix. -- Vladimir B. Grebenchikov vova@fbsd.ru
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