From owner-freebsd-stable@FreeBSD.ORG Mon Jun 18 21:04:10 2012 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 51F84106564A for ; Mon, 18 Jun 2012 21:04:10 +0000 (UTC) (envelope-from hm@hm.net.br) Received: from msrv.matik.com.br (msrv.matik.com.br [187.95.0.181]) by mx1.freebsd.org (Postfix) with ESMTP id C6E4D8FC1A for ; Mon, 18 Jun 2012 21:04:09 +0000 (UTC) Received: from pop1.hm.net.br (pop1.hm.net.br [186.222.218.245]) (authenticated bits=0) by msrv.matik.com.br (8.14.5/8.14.5) with ESMTP id q5IL3fXL035758 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 18 Jun 2012 18:03:42 -0300 (BRT) (envelope-from hm@hm.net.br) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.97.4 at msrv.matik.com.br X-DKIM: OpenDKIM Filter v2.5.2 msrv.matik.com.br q5IL3fXL035758 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=hm.net.br; s=racoon; t=1340053425; bh=obnLzRCohFtgYWPlPLqikJkK8m1SKA14qzLpEPQXEtI=; h=From:To:Subject:Date:Cc:References:In-Reply-To; b=BpCMC3n+FtpQTOr1xqivUq/vgCupOSfxMvckrAr438yTQacC40Cz9Bkmbclpne1Ax LUNWB4ug5WFnOKsyhID1M0W3pj+FHLou7CEhjtIutk0upbhlRS9a0dFYhhyk6vHbOO so4U2ik2B2AvhexL/+nHSbbTSM7MHISBVMEhUll0= Authentication-Results: msrv.matik.com.br; sender-id=pass header.from=hm@hm.net.br; auth=pass (PLAIN); spf=pass smtp.mfrom=hm@hm.net.br From: H Organization: HM-Net To: freebsd-stable@freebsd.org Date: Mon, 18 Jun 2012 18:03:34 -0300 User-Agent: KMail/1.13.7 (FreeBSD/9.0-STABLE; KDE/4.8.4; i386; ; ) References: <4FDB6AA3.3040606@gmail.com> <4FDE5393.5050808@hm.net.br> <201206181754.15680.hselasky@c2i.net> In-Reply-To: <201206181754.15680.hselasky@c2i.net> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1938882.UGr3QkiMLM"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <201206181803.41211.hm@hm.net.br> X-Spam-Status: No, score=-98.0 required=5.0 tests=AWL=0.683,BAYES_00=-1.9,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,RCVD_IN_PBL=3.335,SPF_PASS=-0.001,T_RP_MATCHES_RCVD=-0.01,USER_IN_WHITELIST=-100 msrv.matik.com.br 1102; Body=1 Fuz1=1 Fuz2=1 [127.0.0.11] [1 mail.matik.com.br.] [187.95.0.182] autolearn=no ASN AS28573 186.222.216.0/21 X-Spam-Checker-Version: SpamAssassin 3.3.2-hm_201202.c (2011-06-06) on msrv.matik.com.br Cc: sthaug@nethelp.no, Hans Petter Selasky Subject: Re: How to bind a route to a network adapter and not IP X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Jun 2012 21:04:10 -0000 --nextPart1938882.UGr3QkiMLM Content-Type: Text/Plain; charset="iso-8859-15" Content-Transfer-Encoding: quoted-printable On Monday 18 June 2012 12:54 Hans Petter Selasky wrote: > On Monday 18 June 2012 00:00:51 H wrote: > > sthaug@nethelp.no wrote: > > >>> I loose packets because I use a WLAN adapter. Sometimes the link is > > >>> down for various reasons, and then the routes start changing for > > >>> manually created routes, and I want to prevent that. > > >>=20 > > >> well that is certainly not a reason for changing routes > > >>=20 > > >> I have the feeling you are not explaining good enough what really is > > >> going on and it may help sending your configurations and an example = of > > >> routes and IP addresses before and after this route change > > >=20 > > > Why is this so hard to understand? "Link down" leads to "static route > > > is deleted". This is standard FreeBSD behavior, and has been this way > > > for as long as I can remember (btw, I believe this behavior is from > > > the original BSD, not FreeBSD specific). > > >=20 > > > You can show this by having a static default route pointing to an > > > address on an Ethernet interface which has link. And then pulling the > > > TP cable from the Ethernet interface. Observe that the default route > > > is automatically removed. > >=20 > > may be you have not understood your own problem yet > >=20 > > because so far is nothing to be understood because none of your > > statements is correct, it is also not FreeBSD's standard behavior and > > never has been > >=20 > > as long as there is the valid IP address on the related interface, no > > static route will be deleted, you can even boot without cable and the > > [default] static route is there > >=20 > > so you need to explain better your problem in order to understand it > >=20 > > probably you have some other stuff running, thirdparty network manager > > or something, incorrect or incomplete ppoe or dhc configuration or > > whatever leads to the problem > >=20 > > FYI static routes usually are the manually configured routes, so what > > you say is redundant and not correct, I guess you're loosing some kind > > of dynamic route > >=20 > > since WL networks usually do not run RIP/OSPF/BGP I guess the route you > > apparently loose is coming from some dhcp server and may be your > > dhclient configuration is incomplete or none existent, but here now it > > would be useful to see your config >=20 > Hi, >=20 > I think we need to distinguish between two matters. One is where the route > is directly reachable on the local-net of the network adapter, and ARP is > valid/responding. The second case is when the route is not directly > reachable. The second case is where the problem happens, like Stian kindly > explained. >=20 > # For example: >=20 > ifconfig wlan0 10.0.0.2 255.255.255.0 up >=20 > # Assume the router is at 10.0.0.1 > # And we want to reach a certain destination through 10.0.0.1 > # Then we do: >=20 > route add 10.22.1.1 10.0.0.1 >=20 no no no my friend, wrong again that is a static route and it goes away same way it was created, manually o= r=20 by deleting the IP address 10.0.0.2 from the related interface wether there is or not an active link on that interface does not matter Hans > # > # First the FreeBSD network stack will resolve the ethernet address for > # 10.0.0.1, and all 10.22.1.1 IP packets will get sent to 10.0.0.1. > # >=20 > However, if the wlan0 link goes down, which sometimes happen, then the > route for 10.22.1.1 is deleted. This is sometimes very annoying, and also, > if it happens that the 10.22.1.1 is reachable from another network > adapter, then traffic sometimes can end up mis-routed. >=20 > --HPS > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" =2D-=20 HM +55 17 8111.3300 --nextPart1938882.UGr3QkiMLM Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEABECAAYFAk/fl60ACgkQvKVfg5xjCDzK5gCglEFRfc7RqFVXk4SBDEeipJds DqsAn2oNl2zn9XG78Cn5LkMOkv0UTb5I =WuSW -----END PGP SIGNATURE----- --nextPart1938882.UGr3QkiMLM--