From owner-cvs-all Mon Jan 29 4:39:20 2001 Delivered-To: cvs-all@freebsd.org Received: from relay.butya.kz (butya-gw.butya.kz [212.154.129.94]) by hub.freebsd.org (Postfix) with ESMTP id A765C37B404; Mon, 29 Jan 2001 04:38:56 -0800 (PST) Received: by relay.butya.kz (Postfix, from userid 1000) id 81151286FB; Mon, 29 Jan 2001 18:38:52 +0600 (ALMT) Received: from localhost (localhost [127.0.0.1]) by relay.butya.kz (Postfix) with ESMTP id 7675528679; Mon, 29 Jan 2001 18:38:52 +0600 (ALMT) Date: Mon, 29 Jan 2001 18:38:52 +0600 (ALMT) From: Boris Popov To: Peter Wemm Cc: Poul-Henning Kamp , Julian Elischer , cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/net if_loop.c if_var.h In-Reply-To: <200101291229.f0TCTe450561@mobile.wemm.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, 29 Jan 2001, Peter Wemm wrote: > > BGP, OSPF and others like to have a stable IP# for the router-id, putting > > that on a loopback interface is as close as you get to an interface which > > is always "up". > > Speaking of which.. I've seen quite a few places where they drop the > IFF_LOOPBACK flag on the non-primary interface so that it "looks" > like a real interface.. I think there is even a PR on it. I considered > turning of IFF_LOOPBACK for the non-primary lo0, but decided not to this > time. Anybody know anything about this and why this might be done? IPX aware programs can enumerate local interfaces list to get information about so-called "internal networks". In addition IPX-stack code uses IFF_LOOPBACK to disable broadcasts on internal networks. -- Boris Popov http://www.butya.kz/~bp/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message