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#! rnews 1880 sserve.cc.adfa.oz.au Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!news.sprintlink.net!news.primenet.com!usenet From: Larry Kruper <lak@primenet.com> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Problem with ifconfig alias Date: 6 Aug 1995 14:45:53 GMT Organization: Primenet Lines: 36 Message-ID: <402kj1$jv6@nnrp1.primenet.com> References: <400tlf$5na@alpha.aladdin.co.uk> NNTP-Posting-Host: usr2.primenet.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 1.1N (X11; I; HP-UX A.09.05 9000/712) X-URL: news:400tlf$5na@alpha.aladdin.co.uk chris@aladdin.net wrote: >In article <3vuhco$86n@gate.sinica.edu.tw>, taob@gate.sinica.edu.tw (Brian Tao) >writes: > >>In article <3vtud3$inv@alpha.aladdin.co.uk>, <chris@aladdin.net> wrote: >>: >>:Can anyone help explain what is happening in the example below. >>:I need multiple IP addresses on the same interface in order to >>:run multiple www servers. This works fine under Linux but something >>:odd is happening under FreeBSD which I would like to switch to. >>[...] >>:bash# /sbin/ifconfig ed1 alias 193.119.96.55 >>:ifconfig: ioctl (SIOCAIFADDR): File exists >>:^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Weird error message what file >> >> Try using a 0xffffffff netmask on your alias: >> >>ifconfig ed1 193.119.96.55 netmask 0xffffffff alias > >Works fine, thanks a lot for the reply > I would like to try this as well. I am willing to shamelessly copy this example, but I would prefer to understand all the applications for this feature. For example, is it possible to 'telnet' to the new address on the same machine ? If, so are you packets assigned to the new ip ? What are the routeing commands in BSD to allow connectivity to this new address, and is there a limit to the number allowed. lak (yes I will be reading the man pages too)