From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH] ppp: allow disabling multilink protocol ID compression Date: Tue, 28 Dec 2010 13:53:55 -0800 (PST) Message-ID: <20101228.135355.115924746.davem@davemloft.net> References: <20101220195833.26786ec5@nehalam> <20101221224400.GA17383@brick.ozlabs.ibm.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: shemminger@vyatta.com, linux-ppp@vger.kernel.org, netdev@vger.kernel.org To: paulus@samba.org Return-path: In-Reply-To: <20101221224400.GA17383@brick.ozlabs.ibm.com> Sender: linux-ppp-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Paul Mackerras Date: Wed, 22 Dec 2010 09:44:00 +1100 > On Mon, Dec 20, 2010 at 07:58:33PM -0800, Stephen Hemminger wrote: > >> Linux would not connect to other router running old version Cisco IOS (12.0). >> This is most likely a bug in that version of IOS, since it is fixed >> in later versions. As a workaround this patch allows a module parameter >> to be set to disable compressing the protocol ID. >> >> See: https://bugzilla.vyatta.com/show_bug.cgi?id=3979 >> >> RFC 1990 allows an implementation to formulate MP fragments as if protocol >> compression had been negotiated. This allows us to always send compressed >> protocol IDs. But some implementations don't accept MP fragments with >> compressed protocol IDs. This parameter allows us to interoperate with >> them. The default value of the configurable parameter is the same as the >> current behavior: protocol compression is enabled. If protocol compression >> is disabled we will not send compressed protocol IDs. >> >> This is based on an earlier patch by Bob Gilligan (using a sysctl). >> Module parameter is writable to allow for enabling even if ppp >> is already loaded for other uses. >> >> Signed-off-by: Stephen Hemminger > > Acked-by: Paul Mackerras Applied, thanks.