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#! rnews 1703 bsd Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!news.cs.su.oz.au!metro!metro!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!howland.erols.net!www.nntp.primenet.com!nntp.primenet.com!ix.netcom.com!news.enteract.com!news.inetnebr.com!newsrelay.courtave.net!polo.iquest.com!news3.crl.com!nexp.crl.com!usenet From: "Jordan K. Hubbard" <jkh@FreeBSD.org> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: Two devices with same IP Date: Tue, 03 Dec 1996 22:30:01 -0800 Organization: Walnut Creek CDROM Lines: 15 Message-ID: <32A51A69.167EB0E7@FreeBSD.org> References: <56ltqk$nhv@csugrad.cs.vt.edu> <56lvvc$62f$1@gail.ripco.com> <577usn$15g@anorak.coverform.lan> <nigel.26.000DFF56@znet.net.au> NNTP-Posting-Host: time.cdrom.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.01 (X11; I; FreeBSD 3.0-CURRENT i386) To: Nigel Gorry <nigel@znet.net.au> Nigel Gorry wrote: > I think the netmask is irrelevant on a Point-to-Point link. I used to use > 0xffffffff, but when I reconfigured I got lazy and just left it at the default > 0xffffff00, and it seemed to make absolutely no difference to the routing > table. I know that it should make a difference, and on dedicated routers it > does, but not in FreeBSD. You were right in your first sentence. :-) It's irrelevant for a point-to-point link and hence should NOT make a difference on any sort of router. A netmask tells the routing code which addresses should be directly reachable through a given interface, but a p2p interface by definition is has only one address so the netmask is superfluous. -- - Jordan Hubbard President, FreeBSD Project