From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Ford Subject: Re: [PATCH] fix tcp_default_win_scale. Date: Tue, 06 Jul 2004 16:26:15 -0400 Sender: linux-net-owner@vger.kernel.org Message-ID: <40EB0AE7.40803@blue-labs.org> References: <32886.63.170.215.71.1088564087.squirrel@www.osdl.org> <20040629222751.392f0a82.davem@redhat.com> <20040630152750.2d01ca51@dell_ss3.pdx.osdl.net> <20040630153049.3ca25b76.davem@redhat.com> <20040701133738.301b9e46@dell_ss3.pdx.osdl.net> <20040701140406.62dfbc2a.davem@redhat.com> <20040702013225.GA24707@conectiva.com.br> <20040706093503.GA8147@outpost.ds9a.nl> <20040706114741.1bf98bbe@dell_ss3.pdx.osdl.net> <40EB04C7.4000007@us.ibm.com> <20040706131617.39484eff.davem@redhat.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------060801060905010902050409" Cc: Nivedita Singhvi , shemminger@osdl.org, ahu@ds9a.nl, acme@conectiva.com.br, netdev@oss.sgi.com, alessandro.suardi@oracle.com, phyprabab@yahoo.com, linux-net@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: To: "David S. Miller" In-Reply-To: <20040706131617.39484eff.davem@redhat.com> List-Id: netdev.vger.kernel.org This is a multi-part message in MIME format. --------------060801060905010902050409 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit It's been a while since I used a 1460 MTU for PPTP over DSL, but unless OSDN got a clue recently, their firewalls drop the ICMP for PMTU discovery. Does anyone have a tool that exercises a bunch of TCP/IP options to detect such broken firewalls? David David S. Miller wrote: >[...] >Frankly, I've personally seen none of this. I sit on a DSL line with >no firewalling at my end and I can access all sites just fine. This >seems to indicate that most of the breakage is local to the user's >point of access to the net, rather than a firewall at google.com >or kernel.org or similar. > --------------060801060905010902050409 Content-Type: text/x-vcard; charset=utf-8; name="david+challenge-response.vcf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="david+challenge-response.vcf" begin:vcard fn:David Ford n:Ford;David email;internet:david@blue-labs.org title:Industrial Geek tel;home:Ask please tel;cell:(203) 650-3611 x-mozilla-html:TRUE version:2.1 end:vcard --------------060801060905010902050409--