Date: Wed, 17 Dec 1997 23:30:21 +0000 From: Brian Somers <brian@awfulhak.org> To: Archie Cobbs <archie@whistle.com> Cc: grog@lemis.com (Greg Lehey), dennis@etinc.com, hackers@freebsd.org Subject: Re: ifconfig reports bogus netmask Message-ID: <199712172330.XAA08835@awfulhak.demon.co.uk> In-Reply-To: Your message of "Tue, 16 Dec 1997 18:21:38 PST." <199712170221.SAA17619@bubba.whistle.com>
next in thread | previous in thread | raw e-mail | index | archive | help
> Greg Lehey writes: > > On Tue, Dec 16, 1997 at 10:39:08AM -0500, dennis wrote: > > > > > > Is there any chance of this getting fixed? Its been broken forever. I'm > > > talking about PTP interfaces, where the routes are inherently host > > > mask routes. ifconfig reports the natural mask or whatever you give > > > it....and its rather confusing trying to explain to the woodchucks that > > > its wrong. > > > > Well, ifconfig reports the net mask that is set. And yes, it's > > inappropriate for "real" point-to-point interfaces. But it's not the > > reporting that's wrong, it's the setting. Just set all ones when > > setting the interface, and you'll be OK. > > > > I suppose I should mention that there's a sizeable minority who think > > this is the way the net mask *should* be. Maybe one of them will > > explain, I keep forgetting. > > I agree with Dennis.. > > The bottom line is that no matter what you set the netmask to, > it has absolutely no effect on anything. > > So unless the current behavior is going to be changed, the netmask > should be removed from the display (at least) because it serves only > to confuse people. Has this always been like this ? I would *expect* the netmask to control who's on the other side, so an interface with inet 10.0.2.1 --> 10.0.1.1 netmask 0xffffff00 should create a route with 10.0.1/24 10.0.2.1 UH ..... tun0 This clearly isn't the case - the mask is lost when the route is created at SIOCAIFADDR time. This, IMHO is wrong. ioctl(SIOCAIFADDR) should provide RTA_NETMASK as a part of rtm_addrs ! > -Archie > > ___________________________________________________________________________ > Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com -- Brian <brian@Awfulhak.org>, <brian@FreeBSD.org>, <brian@OpenBSD.org> <http://www.Awfulhak.org>; Don't _EVER_ lose your sense of humour....
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199712172330.XAA08835>