From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthias Cramer Subject: Re: Wired behaviour with IPv6 over PPP Date: Thu, 22 May 2008 21:05:47 +0200 Message-ID: <4835C40B.60603@interway.ch> References: <48341C0B.7010003@interway.ch> <20080522014959.0f6191aa.akpm@linux-foundation.org> <48354318.60202@katalix.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig2D9BF51E945CBAD54BE20CB5" Cc: Andrew Morton , linux-kernel , netdev@vger.kernel.org To: James Chapman Return-path: In-Reply-To: <48354318.60202@katalix.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig2D9BF51E945CBAD54BE20CB5 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable James Chapman wrote: > Andrew Morton wrote: >> On Wed, 21 May 2008 14:56:43 +0200 Matthias Cramer >> wrote: >>> I have a very wired behaviour when doing IPv6 over PPPoE. >>> >>> The situation: >>> >>> A linux box connected to a DSL Modem, on the other side is a Cisco >>> LNS which terminates the PPP session (actually L2TP). >>> I have control over both ends. >>> >>> When I have net.ipv6.conf.all.forwarding set to 0 then the ppp >>> Interface gets a IPv6 address from the Cisco via IP6CP. >>> When I have net.ipv6.conf.all.forwarding set to 1 them the ppp >>> Interface does not get an address, it has only a normal link local >>> address. >=20 > What do you mean by normal link local address? a fe80:: address, which every IPv6 enabled Interface has... >=20 >>> When I start the ppp session with forwarding set to 0 I can ping out >>> and there exists a default route to ppp0 , then I switch forwarding t= o 1 >>> the default route disappears and therefore routing does not work any >>> longer. >=20 > Did this work with previous kernel versions? No, in my opinion it never worked. But I thought that pppd does it wrong because id never got an IPv6 address. But I had always forwarding enabled. Now in this case i started pppd without forwarding enabled and got an address. >=20 > Does pppd log any errors? No, no errors --=20 Matthias Cramer System & Network Manager Interway Communication GmbH Phone +41 43 500 1111 Josefstrasse 225 Fax +41 44 271 3535 CH-8005 Zuerich http://www.interway.ch/ --------------enig2D9BF51E945CBAD54BE20CB5 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Public key at: http://www.freestone.net/~cramer/cramer.pgp.php Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFINcQTti/fHC0gglARAvWPAJ0ZHNBeGx7iB7YtV214/vqhf8alcACbB5Jd DUxuFImnGZCPTPysJ74RtUQ= =1m1s -----END PGP SIGNATURE----- --------------enig2D9BF51E945CBAD54BE20CB5--