Date: Sat, 25 May 2002 21:18:58 +0200 From: Gerhard Sittig <Gerhard.Sittig@gmx.net> To: stable@freebsd.org Subject: Re: 4.6-PRERELASE fxp alias woes Message-ID: <20020525211858.N1494@shell.gsinet.sittig.org> In-Reply-To: <200205240009.g4O09Kb2081251@wattres.Watt.COM>; from steve@Watt.COM on Thu, May 23, 2002 at 05:09:20PM -0700 References: <5.1.0.14.2.20020513142059.03741410@127.0.0.1> <200205240009.g4O09Kb2081251@wattres.Watt.COM>
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On Thu, May 23, 2002 at 17:09 -0700, Steve Watt wrote: > > In article <5.1.0.14.2.20020513142059.03741410@127.0.0.1> you write: > >network_interfaces="fxp0 lo0" > >ifconfig_fxp0="inet 216.109.194.4 netmask 255.255.255.0" > >ifconfig_fxp0_alias0="inet 216.109.194.8 netmask 255.255.255.0" > > As everyone has pointed out, the kernel is now enforcing netmasks on > same-subnet aliases. > > But I've got a really simple question: Why, if it is so easy to detect > programatically, do we not just *fix* it automagically? Is there *ever* > a case where it is useful to have a same-subnet alias with a different > subnet mask (besides the obvious point of it doesn't work with the > current code). Huh? I trust a computer to detect _that_ there are collisions. But I'd *never* trust the machine to decide _which_ one of multiple parameters is the wrong one. This would be some kind of "no matter what I tell you, do what I mean" or even worse "don't take me too serious, do what you think I meant". This is definitely not the UNIX way. If you wish for this kind of features, don't hesitate to install a different OS on your machine. :> > In other words, is there some useful future behavior that such a change > would make unpleasant/undoable? You seem to miss the point of applying an alias to your NIC which lives in a different network than the primary address. That's when a netmask different from 255.255.255.255 makes perfect sense and actually is required. virtually yours 82D1 9B9C 01DC 4FB4 D7B4 61BE 3F49 4F77 72DE DA76 Gerhard Sittig true | mail -s "get gpg key" Gerhard.Sittig@gmx.net -- If you don't understand or are scared by any of the above ask your parents or an adult to help you. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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