Date: Mon, 9 Sep 1996 20:47:56 +0200 (IST) From: Nadav Eiron <nadav@barcode.co.il> To: Ben Black <black@gage.com> Cc: Rob Buchanan <rob@www.odod.ohio.gov>, questions@freebsd.org Subject: Re: Multi host web server on FreeBSD Message-ID: <Pine.BSF.3.91.960909204500.4905A-100000@gatekeeper.barcode.co.il> In-Reply-To: <9609091520.AA12370@squid.gage.com>
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On Mon, 9 Sep 1996, Ben Black wrote: > > Use IP aliases, like so: > > ifconfig de0 inet <ip-address> netmask 255.255.255.255 alias > > > > This will add an alias address to an existing interface (de0 in this > > example). Note that the mask should be all 1-s. > > why? i keep seeing people do this and it just makes no sense to me. Well, the reason is that the rule to go by is that if a machine has more than one IP address those should be on different networks. Since when configuring virtual hosts you normally won't assign addresses from different nets or subnets, using a mask of all 1-s will let you use addresses from the same net. I also think that with 2.1.0 the "do ifconfig twice" bug does not manifest itself when such a mask is given (at least for me it doesn't). Bottom line, that's what I use, it works for me, and for several other people who has problems with aliases, asked a question about it on this list, and got that same answer. > > > b3n > Nadav
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